CVE-2026-78372 (GCVE-0-2026-78372)
Vulnerability from cvelistv5
Published
2026-08-24 13:09
Modified
2026-08-24 17:26
CWE
Summary
RansomLook does not consistently enforce authorization checks when accessing groups, markets, and ransom notes marked as private. An unauthenticated or otherwise unauthorized remote attacker can access information associated with private entities through several web views and API endpoints. The affected functionality can disclose private group or market names, ransom-note content, and metadata associated with private groups. The /compare functionality can also be queried directly with the name of a private entity, allowing an unauthorized user to retrieve information such as post counts, mirror totals, and uptime even when the entity is excluded from the normal user interface. The patch explicitly adds a privacy check before returning this information. Ransom-note views, search results, and API endpoints were similarly missing consistent filtering. The fix introduces normalized private-group identifiers and alias handling, then rejects or filters notes associated with private groups before returning them to unauthorized callers. An attacker can exploit the issue remotely without authentication or user interaction, resulting in disclosure of information that was explicitly intended to be restricted to authorized users.
Impacted products
Vendor Product Version
ransomlook ransomlook Version: 0    2.0.0
Create a notification for this product.
Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-78372",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-24T17:26:24.679295Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-24T17:26:40.258Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "ransomlook",
          "repo": "https://github.com/RansomLook/RansomLook",
          "vendor": "ransomlook",
          "versions": [
            {
              "lessThanOrEqual": "2.0.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Jeroen Pinoy"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Fafner [_KeyZee_]"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eRansomLook does not consistently \nenforce authorization checks when accessing groups, markets, and ransom \nnotes marked as private. An unauthenticated or otherwise unauthorized \nremote attacker can access information associated with private entities \nthrough several web views and API endpoints.\u003c/p\u003e\n\u003cp\u003eThe affected functionality can \ndisclose private group or market names, ransom-note content, and \nmetadata associated with private groups. The \u003ccode\u003e/compare\u003c/code\u003e\n functionality can also be queried directly with the name of a private \nentity, allowing an unauthorized user to retrieve information such as \npost counts, mirror totals, and uptime even when the entity is excluded \nfrom the normal user interface. The patch explicitly adds a privacy \ncheck before returning this information. \u003c/p\u003e\n\u003cp\u003eRansom-note views, search results, \nand API endpoints were similarly missing consistent filtering. The fix \nintroduces normalized private-group identifiers and alias handling, then\n rejects or filters notes associated with private groups before \nreturning them to unauthorized callers.  \u003c/p\u003e\n\u003cp\u003eAn attacker can exploit the issue \nremotely without authentication or user interaction, resulting in \ndisclosure of information that was explicitly intended to be restricted \nto authorized users.\u003c/p\u003e"
            }
          ],
          "value": "RansomLook does not consistently \nenforce authorization checks when accessing groups, markets, and ransom \nnotes marked as private. An unauthenticated or otherwise unauthorized \nremote attacker can access information associated with private entities \nthrough several web views and API endpoints.\n\n\nThe affected functionality can \ndisclose private group or market names, ransom-note content, and \nmetadata associated with private groups. The /compare\n functionality can also be queried directly with the name of a private \nentity, allowing an unauthorized user to retrieve information such as \npost counts, mirror totals, and uptime even when the entity is excluded \nfrom the normal user interface. The patch explicitly adds a privacy \ncheck before returning this information. \n\n\nRansom-note views, search results, \nand API endpoints were similarly missing consistent filtering. The fix \nintroduces normalized private-group identifiers and alias handling, then\n rejects or filters notes associated with private groups before \nreturning them to unauthorized callers.  \n\n\nAn attacker can exploit the issue \nremotely without authentication or user interaction, resulting in \ndisclosure of information that was explicitly intended to be restricted \nto authorized users."
        }
      ],
      "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": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 9.2,
            "baseSeverity": "CRITICAL",
            "privilegesRequired": "NONE",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "NONE",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862 Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-24T13:09:23.489Z",
        "orgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8",
        "shortName": "CIRCL"
      },
      "references": [
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/RansomLook/RansomLook/commit/dc92d6d5c076bcdbf3476aca42daf0260e8d99d7"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "RansomLook Missing Authorization Allows Disclosure of Private Group and Ransom Note Data",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "5a6e4751-2f3f-4070-9419-94fb35b644e8",
    "assignerShortName": "CIRCL",
    "cveId": "CVE-2026-78372",
    "datePublished": "2026-08-24T13:09:23.489Z",
    "dateReserved": "2026-08-24T13:09:20.209Z",
    "dateUpdated": "2026-08-24T17:26:40.258Z",
    "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-2026-78372\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-08-24T17:26:24.679295Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-08-24T17:26:36.868Z\"}}], \"cna\": {\"title\": \"RansomLook Missing Authorization Allows Disclosure of Private Group and Ransom Note Data\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Jeroen Pinoy\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"value\": \"Fafner [_KeyZee_]\"}], \"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\": 9.2, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"NETWORK\", \"baseSeverity\": \"CRITICAL\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"HIGH\", \"vulnConfidentialityImpact\": \"HIGH\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"repo\": \"https://github.com/RansomLook/RansomLook\", \"vendor\": \"ransomlook\", \"product\": \"ransomlook\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"2.0.0\"}], \"defaultStatus\": \"unaffected\"}], \"references\": [{\"url\": \"https://github.com/RansomLook/RansomLook/commit/dc92d6d5c076bcdbf3476aca42daf0260e8d99d7\", \"tags\": [\"patch\"]}], \"x_generator\": {\"engine\": \"Vulnogram 0.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"RansomLook does not consistently \\nenforce authorization checks when accessing groups, markets, and ransom \\nnotes marked as private. An unauthenticated or otherwise unauthorized \\nremote attacker can access information associated with private entities \\nthrough several web views and API endpoints.\\n\\n\\nThe affected functionality can \\ndisclose private group or market names, ransom-note content, and \\nmetadata associated with private groups. The /compare\\n functionality can also be queried directly with the name of a private \\nentity, allowing an unauthorized user to retrieve information such as \\npost counts, mirror totals, and uptime even when the entity is excluded \\nfrom the normal user interface. The patch explicitly adds a privacy \\ncheck before returning this information. \\n\\n\\nRansom-note views, search results, \\nand API endpoints were similarly missing consistent filtering. The fix \\nintroduces normalized private-group identifiers and alias handling, then\\n rejects or filters notes associated with private groups before \\nreturning them to unauthorized callers.  \\n\\n\\nAn attacker can exploit the issue \\nremotely without authentication or user interaction, resulting in \\ndisclosure of information that was explicitly intended to be restricted \\nto authorized users.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eRansomLook does not consistently \\nenforce authorization checks when accessing groups, markets, and ransom \\nnotes marked as private. An unauthenticated or otherwise unauthorized \\nremote attacker can access information associated with private entities \\nthrough several web views and API endpoints.\u003c/p\u003e\\n\u003cp\u003eThe affected functionality can \\ndisclose private group or market names, ransom-note content, and \\nmetadata associated with private groups. The \u003ccode\u003e/compare\u003c/code\u003e\\n functionality can also be queried directly with the name of a private \\nentity, allowing an unauthorized user to retrieve information such as \\npost counts, mirror totals, and uptime even when the entity is excluded \\nfrom the normal user interface. The patch explicitly adds a privacy \\ncheck before returning this information. \u003c/p\u003e\\n\u003cp\u003eRansom-note views, search results, \\nand API endpoints were similarly missing consistent filtering. The fix \\nintroduces normalized private-group identifiers and alias handling, then\\n rejects or filters notes associated with private groups before \\nreturning them to unauthorized callers.  \u003c/p\u003e\\n\u003cp\u003eAn attacker can exploit the issue \\nremotely without authentication or user interaction, resulting in \\ndisclosure of information that was explicitly intended to be restricted \\nto authorized users.\u003c/p\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-862\", \"description\": \"CWE-862 Missing Authorization\"}]}], \"providerMetadata\": {\"orgId\": \"5a6e4751-2f3f-4070-9419-94fb35b644e8\", \"shortName\": \"CIRCL\", \"dateUpdated\": \"2026-08-24T13:09:23.489Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-78372\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-08-24T17:26:40.258Z\", \"dateReserved\": \"2026-08-24T13:09:20.209Z\", \"assignerOrgId\": \"5a6e4751-2f3f-4070-9419-94fb35b644e8\", \"datePublished\": \"2026-08-24T13:09:23.489Z\", \"assignerShortName\": \"CIRCL\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.


Loading…

Loading…

Loading…

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.


Loading…

Loading…