CVE-2026-28808 (GCVE-0-2026-28808)
Vulnerability from cvelistv5
Published
2026-04-07 12:28
Modified
2026-04-07 14:38
Severity ?
8.3 (High) - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-863 - Incorrect Authorization
Summary
Incorrect Authorization vulnerability in Erlang OTP (inets modules) allows unauthenticated access to CGI scripts protected by directory rules when served via script_alias. When script_alias maps a URL prefix to a directory outside DocumentRoot, mod_auth evaluates directory-based access controls against the DocumentRoot-relative path while mod_cgi executes the script at the ScriptAlias-resolved path. This path mismatch allows unauthenticated access to CGI scripts that directory rules were meant to protect. This vulnerability is associated with program files lib/inets/src/http_server/mod_alias.erl, lib/inets/src/http_server/mod_auth.erl, and lib/inets/src/http_server/mod_cgi.erl. This issue affects OTP from OTP 17.0 until OTP 28.4.2, 27.3.4.10 and 26.2.5.19 corresponding to inets from 5.10 until 9.6.2, 9.3.2.4 and 9.1.0.6.
References
Impacted products
Vendor Product Version
Erlang OTP Version: 5.10
    cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*
 Create a notification for this product.
   Erlang OTP Version: 17.0
Version: 07b8f441ca711f9812fad9e9115bab3c3aa92f79
    cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*
 Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-28808",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-07T13:14:10.515632Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-07T13:14:16.481Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "affected",
          "modules": [
            "inets"
          ],
          "packageName": "inets",
          "packageURL": "pkg:otp/inets?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp\u0026vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.git",
          "product": "OTP",
          "programFiles": [
            "src/http_server/mod_alias.erl",
            "src/http_server/mod_auth.erl",
            "src/http_server/mod_cgi.erl"
          ],
          "repo": "https://github.com/erlang/otp",
          "vendor": "Erlang",
          "versions": [
            {
              "changes": [
                {
                  "at": "9.6.2",
                  "status": "unaffected"
                },
                {
                  "at": "9.3.2.4",
                  "status": "unaffected"
                },
                {
                  "at": "9.1.0.6",
                  "status": "unaffected"
                }
              ],
              "lessThan": "*",
              "status": "affected",
              "version": "5.10",
              "versionType": "otp"
            }
          ]
        },
        {
          "collectionURL": "https://github.com",
          "cpes": [
            "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "affected",
          "modules": [
            "inets"
          ],
          "packageName": "erlang/otp",
          "packageURL": "pkg:github/erlang/otp",
          "product": "OTP",
          "programFiles": [
            "lib/inets/src/http_server/mod_alias.erl",
            "lib/inets/src/http_server/mod_auth.erl",
            "lib/inets/src/http_server/mod_cgi.erl"
          ],
          "repo": "https://github.com/erlang/otp",
          "vendor": "Erlang",
          "versions": [
            {
              "changes": [
                {
                  "at": "28.4.2",
                  "status": "unaffected"
                },
                {
                  "at": "27.3.4.10",
                  "status": "unaffected"
                },
                {
                  "at": "26.2.5.19",
                  "status": "unaffected"
                }
              ],
              "lessThan": "*",
              "status": "affected",
              "version": "17.0",
              "versionType": "otp"
            },
            {
              "changes": [
                {
                  "at": "8fc71ac6af4fbcc54103bec2983ef22e82942688",
                  "status": "unaffected"
                },
                {
                  "at": "9dfa0c51eac97866078e808dec2183cb7871ff7c",
                  "status": "unaffected"
                }
              ],
              "lessThan": "*",
              "status": "affected",
              "version": "07b8f441ca711f9812fad9e9115bab3c3aa92f79",
              "versionType": "git"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "The inets httpd server must use \u003ctt\u003escript_alias\u003c/tt\u003e to map a URL prefix to a CGI directory, combined with \u003ctt\u003edirectory\u003c/tt\u003e-based access controls (e.g., \u003ctt\u003emod_auth\u003c/tt\u003e) protecting the \u003ctt\u003escript_alias\u003c/tt\u003e target path. The vulnerability applies whenever the \u003ctt\u003escript_alias\u003c/tt\u003e target path differs from \u003ctt\u003eDocumentRoot\u003c/tt\u003e + URL prefix."
            }
          ],
          "value": "The inets httpd server must use script_alias to map a URL prefix to a CGI directory, combined with directory-based access controls (e.g., mod_auth) protecting the script_alias target path. The vulnerability applies whenever the script_alias target path differs from DocumentRoot + URL prefix."
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "26.2.5.19",
                  "versionStartIncluding": "17.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "27.3.4.10",
                  "versionStartIncluding": "27.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "28.4.2",
                  "versionStartIncluding": "28.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ],
          "operator": "AND"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "reporter",
          "value": "Igor Morgenstern / Aisle Research"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Konrad Pietrzak"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Incorrect Authorization vulnerability in Erlang OTP (inets modules) allows unauthenticated access to CGI scripts protected by \u003ctt\u003edirectory\u003c/tt\u003e rules when served via \u003ctt\u003escript_alias\u003c/tt\u003e.\u003cp\u003eWhen \u003ctt\u003escript_alias\u003c/tt\u003e maps a URL prefix to a directory outside \u003ctt\u003eDocumentRoot\u003c/tt\u003e, \u003ctt\u003emod_auth\u003c/tt\u003e evaluates \u003ctt\u003edirectory\u003c/tt\u003e-based access controls against the \u003ctt\u003eDocumentRoot\u003c/tt\u003e-relative path while \u003ctt\u003emod_cgi\u003c/tt\u003e executes the script at the \u003ctt\u003eScriptAlias\u003c/tt\u003e-resolved path. This path mismatch allows unauthenticated access to CGI scripts that \u003ctt\u003edirectory\u003c/tt\u003e rules were meant to protect.\u003c/p\u003e\u003cp\u003eThis vulnerability is associated with program files \u003ctt\u003elib/inets/src/http_server/mod_alias.erl\u003c/tt\u003e, \u003ctt\u003elib/inets/src/http_server/mod_auth.erl\u003c/tt\u003e, and \u003ctt\u003elib/inets/src/http_server/mod_cgi.erl\u003c/tt\u003e.\u003c/p\u003e\u003cp\u003eThis issue affects OTP from OTP 17.0 until OTP 28.4.2, 27.3.4.10 and 26.2.5.19 corresponding to inets from 5.10 until 9.6.2, 9.3.2.4 and 9.1.0.6.\u003c/p\u003e"
            }
          ],
          "value": "Incorrect Authorization vulnerability in Erlang OTP (inets modules) allows unauthenticated access to CGI scripts protected by directory rules when served via script_alias.\n\nWhen script_alias maps a URL prefix to a directory outside DocumentRoot, mod_auth evaluates directory-based access controls against the DocumentRoot-relative path while mod_cgi executes the script at the ScriptAlias-resolved path. This path mismatch allows unauthenticated access to CGI scripts that directory rules were meant to protect.\n\nThis vulnerability is associated with program files lib/inets/src/http_server/mod_alias.erl, lib/inets/src/http_server/mod_auth.erl, and lib/inets/src/http_server/mod_cgi.erl.\n\nThis issue affects OTP from OTP 17.0 until OTP 28.4.2, 27.3.4.10 and 26.2.5.19 corresponding to inets from 5.10 until 9.6.2, 9.3.2.4 and 9.1.0.6."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-1",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 8.3,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "LOW",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863 Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-07T14:38:09.190Z",
        "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "shortName": "EEF"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory",
            "related"
          ],
          "url": "https://github.com/erlang/otp/security/advisories/GHSA-3vhp-h532-mc3f"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://cna.erlef.org/cves/CVE-2026-28808.html"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://osv.dev/vulnerability/EEF-CVE-2026-28808"
        },
        {
          "tags": [
            "x_version-scheme"
          ],
          "url": "https://www.erlang.org/doc/system/versions.html#order-of-versions"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/erlang/otp/commit/8fc71ac6af4fbcc54103bec2983ef22e82942688"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/erlang/otp/commit/9dfa0c51eac97866078e808dec2183cb7871ff7c"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "ScriptAlias CGI targets bypass directory auth in inets httpd (mod_auth vs mod_cgi path mismatch)",
      "workarounds": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cul\u003e\u003cli\u003eMove CGI scripts inside \u003ctt\u003eDocumentRoot\u003c/tt\u003e and use \u003ctt\u003ealias\u003c/tt\u003e instead of \u003ctt\u003escript_alias\u003c/tt\u003e to ensure \u003ctt\u003emod_auth\u003c/tt\u003e resolves the correct path.\u003c/li\u003e\u003cli\u003eApply URL-based access controls at a reverse proxy layer to block unauthenticated access to the \u003ctt\u003escript_alias\u003c/tt\u003e URL prefix.\u003c/li\u003e\u003cli\u003eRemove \u003ctt\u003emod_cgi\u003c/tt\u003e from the httpd modules chain if CGI functionality is not required.\u003c/li\u003e\u003c/ul\u003e"
            }
          ],
          "value": "* Move CGI scripts inside DocumentRoot and use alias instead of script_alias to ensure mod_auth resolves the correct path.\n* Apply URL-based access controls at a reverse proxy layer to block unauthenticated access to the script_alias URL prefix.\n* Remove mod_cgi from the httpd modules chain if CGI functionality is not required."
        }
      ],
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
    "assignerShortName": "EEF",
    "cveId": "CVE-2026-28808",
    "datePublished": "2026-04-07T12:28:16.056Z",
    "dateReserved": "2026-03-03T14:40:00.590Z",
    "dateUpdated": "2026-04-07T14:38:09.190Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-28808\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-04-07T13:14:10.515632Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-04-07T13:14:12.725Z\"}}], \"cna\": {\"title\": \"ScriptAlias CGI targets bypass directory auth in inets httpd (mod_auth vs mod_cgi path mismatch)\", \"source\": {\"discovery\": \"EXTERNAL\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"reporter\", \"value\": \"Igor Morgenstern / Aisle Research\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"value\": \"Konrad Pietrzak\"}], \"impacts\": [{\"capecId\": \"CAPEC-1\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-1 Accessing Functionality Not Properly Constrained by ACLs\"}]}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 8.3, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N\", \"exploitMaturity\": \"NOT_DEFINED\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"PRESENT\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"LOW\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"HIGH\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:erlang:erlang\\\\/otp:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/erlang/otp\", \"vendor\": \"Erlang\", \"modules\": [\"inets\"], \"product\": \"OTP\", \"versions\": [{\"status\": \"affected\", \"changes\": [{\"at\": \"9.6.2\", \"status\": \"unaffected\"}, {\"at\": \"9.3.2.4\", \"status\": \"unaffected\"}, {\"at\": \"9.1.0.6\", \"status\": \"unaffected\"}], \"version\": \"5.10\", \"lessThan\": \"*\", \"versionType\": \"otp\"}], \"packageURL\": \"pkg:otp/inets?repository_url=https:%2F%2Fgithub.com%2Ferlang%2Fotp\u0026vcs_url=git%20https:%2F%2Fgithub.com%2Ferlang%2Fotp.git\", \"packageName\": \"inets\", \"programFiles\": [\"src/http_server/mod_alias.erl\", \"src/http_server/mod_auth.erl\", \"src/http_server/mod_cgi.erl\"], \"defaultStatus\": \"affected\"}, {\"cpes\": [\"cpe:2.3:a:erlang:erlang\\\\/otp:*:*:*:*:*:*:*:*\"], \"repo\": \"https://github.com/erlang/otp\", \"vendor\": \"Erlang\", \"modules\": [\"inets\"], \"product\": \"OTP\", \"versions\": [{\"status\": \"affected\", \"changes\": [{\"at\": \"28.4.2\", \"status\": \"unaffected\"}, {\"at\": \"27.3.4.10\", \"status\": \"unaffected\"}, {\"at\": \"26.2.5.19\", \"status\": \"unaffected\"}], \"version\": \"17.0\", \"lessThan\": \"*\", \"versionType\": \"otp\"}, {\"status\": \"affected\", \"changes\": [{\"at\": \"8fc71ac6af4fbcc54103bec2983ef22e82942688\", \"status\": \"unaffected\"}, {\"at\": \"9dfa0c51eac97866078e808dec2183cb7871ff7c\", \"status\": \"unaffected\"}], \"version\": \"07b8f441ca711f9812fad9e9115bab3c3aa92f79\", \"lessThan\": \"*\", \"versionType\": \"git\"}], \"packageURL\": \"pkg:github/erlang/otp\", \"packageName\": \"erlang/otp\", \"programFiles\": [\"lib/inets/src/http_server/mod_alias.erl\", \"lib/inets/src/http_server/mod_auth.erl\", \"lib/inets/src/http_server/mod_cgi.erl\"], \"collectionURL\": \"https://github.com\", \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://github.com/erlang/otp/security/advisories/GHSA-3vhp-h532-mc3f\", \"tags\": [\"vendor-advisory\", \"related\"]}, {\"url\": \"https://cna.erlef.org/cves/CVE-2026-28808.html\", \"tags\": [\"related\"]}, {\"url\": \"https://osv.dev/vulnerability/EEF-CVE-2026-28808\", \"tags\": [\"related\"]}, {\"url\": \"https://www.erlang.org/doc/system/versions.html#order-of-versions\", \"tags\": [\"x_version-scheme\"]}, {\"url\": \"https://github.com/erlang/otp/commit/8fc71ac6af4fbcc54103bec2983ef22e82942688\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/erlang/otp/commit/9dfa0c51eac97866078e808dec2183cb7871ff7c\", \"tags\": [\"patch\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"* Move CGI scripts inside DocumentRoot and use alias instead of script_alias to ensure mod_auth resolves the correct path.\\n* Apply URL-based access controls at a reverse proxy layer to block unauthenticated access to the script_alias URL prefix.\\n* Remove mod_cgi from the httpd modules chain if CGI functionality is not required.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cul\u003e\u003cli\u003eMove CGI scripts inside \u003ctt\u003eDocumentRoot\u003c/tt\u003e and use \u003ctt\u003ealias\u003c/tt\u003e instead of \u003ctt\u003escript_alias\u003c/tt\u003e to ensure \u003ctt\u003emod_auth\u003c/tt\u003e resolves the correct path.\u003c/li\u003e\u003cli\u003eApply URL-based access controls at a reverse proxy layer to block unauthenticated access to the \u003ctt\u003escript_alias\u003c/tt\u003e URL prefix.\u003c/li\u003e\u003cli\u003eRemove \u003ctt\u003emod_cgi\u003c/tt\u003e from the httpd modules chain if CGI functionality is not required.\u003c/li\u003e\u003c/ul\u003e\", \"base64\": false}]}], \"x_generator\": {\"engine\": \"Vulnogram 0.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Incorrect Authorization vulnerability in Erlang OTP (inets modules) allows unauthenticated access to CGI scripts protected by directory rules when served via script_alias.\\n\\nWhen script_alias maps a URL prefix to a directory outside DocumentRoot, mod_auth evaluates directory-based access controls against the DocumentRoot-relative path while mod_cgi executes the script at the ScriptAlias-resolved path. This path mismatch allows unauthenticated access to CGI scripts that directory rules were meant to protect.\\n\\nThis vulnerability is associated with program files lib/inets/src/http_server/mod_alias.erl, lib/inets/src/http_server/mod_auth.erl, and lib/inets/src/http_server/mod_cgi.erl.\\n\\nThis issue affects OTP from OTP 17.0 until OTP 28.4.2, 27.3.4.10 and 26.2.5.19 corresponding to inets from 5.10 until 9.6.2, 9.3.2.4 and 9.1.0.6.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Incorrect Authorization vulnerability in Erlang OTP (inets modules) allows unauthenticated access to CGI scripts protected by \u003ctt\u003edirectory\u003c/tt\u003e rules when served via \u003ctt\u003escript_alias\u003c/tt\u003e.\u003cp\u003eWhen \u003ctt\u003escript_alias\u003c/tt\u003e maps a URL prefix to a directory outside \u003ctt\u003eDocumentRoot\u003c/tt\u003e, \u003ctt\u003emod_auth\u003c/tt\u003e evaluates \u003ctt\u003edirectory\u003c/tt\u003e-based access controls against the \u003ctt\u003eDocumentRoot\u003c/tt\u003e-relative path while \u003ctt\u003emod_cgi\u003c/tt\u003e executes the script at the \u003ctt\u003eScriptAlias\u003c/tt\u003e-resolved path. This path mismatch allows unauthenticated access to CGI scripts that \u003ctt\u003edirectory\u003c/tt\u003e rules were meant to protect.\u003c/p\u003e\u003cp\u003eThis vulnerability is associated with program files \u003ctt\u003elib/inets/src/http_server/mod_alias.erl\u003c/tt\u003e, \u003ctt\u003elib/inets/src/http_server/mod_auth.erl\u003c/tt\u003e, and \u003ctt\u003elib/inets/src/http_server/mod_cgi.erl\u003c/tt\u003e.\u003c/p\u003e\u003cp\u003eThis issue affects OTP from OTP 17.0 until OTP 28.4.2, 27.3.4.10 and 26.2.5.19 corresponding to inets from 5.10 until 9.6.2, 9.3.2.4 and 9.1.0.6.\u003c/p\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-863\", \"description\": \"CWE-863 Incorrect Authorization\"}]}], \"configurations\": [{\"lang\": \"en\", \"value\": \"The inets httpd server must use script_alias to map a URL prefix to a CGI directory, combined with directory-based access controls (e.g., mod_auth) protecting the script_alias target path. The vulnerability applies whenever the script_alias target path differs from DocumentRoot + URL prefix.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"The inets httpd server must use \u003ctt\u003escript_alias\u003c/tt\u003e to map a URL prefix to a CGI directory, combined with \u003ctt\u003edirectory\u003c/tt\u003e-based access controls (e.g., \u003ctt\u003emod_auth\u003c/tt\u003e) protecting the \u003ctt\u003escript_alias\u003c/tt\u003e target path. The vulnerability applies whenever the \u003ctt\u003escript_alias\u003c/tt\u003e target path differs from \u003ctt\u003eDocumentRoot\u003c/tt\u003e + URL prefix.\", \"base64\": false}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:erlang:erlang\\\\/otp:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"26.2.5.19\", \"versionStartIncluding\": \"17.0\"}, {\"criteria\": \"cpe:2.3:a:erlang:erlang\\\\/otp:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"27.3.4.10\", \"versionStartIncluding\": \"27.0\"}, {\"criteria\": \"cpe:2.3:a:erlang:erlang\\\\/otp:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndExcluding\": \"28.4.2\", \"versionStartIncluding\": \"28.0\"}], \"operator\": \"OR\"}], \"operator\": \"AND\"}], \"providerMetadata\": {\"orgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"shortName\": \"EEF\", \"dateUpdated\": \"2026-04-07T14:38:09.190Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-28808\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-07T14:38:09.190Z\", \"dateReserved\": \"2026-03-03T14:40:00.590Z\", \"assignerOrgId\": \"6b3ad84c-e1a6-4bf7-a703-f496b71e49db\", \"datePublished\": \"2026-04-07T12:28:16.056Z\", \"assignerShortName\": \"EEF\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.