CVE-2026-110628 (GCVE-0-2026-110628)
Vulnerability from cvelistv5
Published
2026-10-14 14:17
Modified
2026-10-16 17:16
CWE
  • CWE-918 - Server-Side Request Forgery (SSRF)
Summary
Kan 0.5.5 through 0.6.0 contains an unauthenticated server-side request forgery vulnerability in the /api/download/attatchment route due to an incomplete fix for CVE-2026-32255. When S3_ENDPOINT is unset, attackers can pass arbitrary url query parameters to fetch() to read internal services, localhost ports, and cloud instance metadata.
Impacted products
Vendor Product Version
kanbn kan Version: 0.5.5   ≤ 0.6.0
Create a notification for this product.
Show details on NVD website


{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-110628",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-16T16:46:50.369655Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-16T17:16:01.554Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://github.com",
          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/kanbn/kan",
          "product": "kan",
          "repo": "https://github.com/kanbn/kan",
          "vendor": "kanbn",
          "versions": [
            {
              "lessThanOrEqual": "0.6.0",
              "status": "affected",
              "version": "0.5.5",
              "versionType": "semver"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:kan:kan:*:*:*:*:*:*:*:*",
                  "versionEndIncluding": "0.6.0",
                  "versionStartIncluding": "0.5.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "leediay153 from Viettel Post"
        }
      ],
      "datePublic": "2026-09-05T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Kan 0.5.5 through 0.6.0 contains an unauthenticated server-side request forgery vulnerability in the /api/download/attatchment route due to an incomplete fix for CVE-2026-32255. When S3_ENDPOINT is unset, attackers can pass arbitrary url query parameters to fetch() to read internal services, localhost ports, and cloud instance metadata."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 9.2,
            "baseSeverity": "CRITICAL",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "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"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.6,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-918",
              "description": "Server-Side Request Forgery (SSRF)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-14T14:17:03.232Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://hackmd.io/@leediay/HyIxU63ofg"
        },
        {
          "name": "Open PR describing the S3_ENDPOINT-unset bypass",
          "tags": [
            "issue-tracking",
            "patch"
          ],
          "url": "https://github.com/kanbn/kan/pull/590"
        },
        {
          "name": "allowlist conditional on S3_ENDPOINT, unconditional fetch(url)",
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/kanbn/kan/blob/v0.6.0/apps/web/src/pages/api/download/attatchment.ts#L21-L52"
        },
        {
          "name": "S3_ENDPOINT documented as blank for AWS S3",
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/kanbn/kan/blob/v0.6.0/.env.example#L25-L27"
        },
        {
          "name": "GitHub Security Advisory (GHSA-qrx8-9hc6-jvqg)",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://github.com/kanbn/kan/security/advisories/GHSA-qrx8-9hc6-jvqg"
        },
        {
          "name": "Incomplete fix for CVE-2026-32255",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/kanbn/kan/commit/53397d8e81dc1494d94132848c1f0416f1152bd7"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/kanbn/kan"
        },
        {
          "name": "VulnCheck Advisory: Kan 0.5.5 through 0.6.0 Unauthenticated SSRF via /api/download/attatchment",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/kan-0.5.5-through-0.6.0-unauthenticated-ssrf-via-api-download-attatchment"
        }
      ],
      "title": "Kan 0.5.5 through 0.6.0 Unauthenticated SSRF via /api/download/attatchment",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-110628",
    "datePublished": "2026-10-14T14:17:03.232Z",
    "dateReserved": "2026-10-14T13:07:29.410Z",
    "dateUpdated": "2026-10-16T17:16:01.554Z",
    "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-2026-110628\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-10-16T16:46:50.369655Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-10-16T16:46:51.154Z\"}}], \"cna\": {\"title\": \"Kan 0.5.5 through 0.6.0 Unauthenticated SSRF via /api/download/attatchment\", \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"leediay153 from Viettel Post\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV4_0\": {\"version\": \"4.0\", \"baseScore\": 9.2, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"CRITICAL\", \"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\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"HIGH\", \"vulnConfidentialityImpact\": \"HIGH\"}}, {\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 8.6, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}], \"affected\": [{\"repo\": \"https://github.com/kanbn/kan\", \"vendor\": \"kanbn\", \"product\": \"kan\", \"versions\": [{\"status\": \"affected\", \"version\": \"0.5.5\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"0.6.0\"}], \"packageURL\": \"pkg:github/kanbn/kan\", \"collectionURL\": \"https://github.com\", \"defaultStatus\": \"unaffected\"}], \"datePublic\": \"2026-09-05T00:00:00.000Z\", \"references\": [{\"url\": \"https://hackmd.io/@leediay/HyIxU63ofg\", \"tags\": [\"third-party-advisory\"]}, {\"url\": \"https://github.com/kanbn/kan/pull/590\", \"name\": \"Open PR describing the S3_ENDPOINT-unset bypass\", \"tags\": [\"issue-tracking\", \"patch\"]}, {\"url\": \"https://github.com/kanbn/kan/blob/v0.6.0/apps/web/src/pages/api/download/attatchment.ts#L21-L52\", \"name\": \"allowlist conditional on S3_ENDPOINT, unconditional fetch(url)\", \"tags\": [\"technical-description\"]}, {\"url\": \"https://github.com/kanbn/kan/blob/v0.6.0/.env.example#L25-L27\", \"name\": \"S3_ENDPOINT documented as blank for AWS S3\", \"tags\": [\"technical-description\"]}, {\"url\": \"https://github.com/kanbn/kan/security/advisories/GHSA-qrx8-9hc6-jvqg\", \"name\": \"GitHub Security Advisory (GHSA-qrx8-9hc6-jvqg)\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://github.com/kanbn/kan/commit/53397d8e81dc1494d94132848c1f0416f1152bd7\", \"name\": \"Incomplete fix for CVE-2026-32255\", \"tags\": [\"patch\"]}, {\"url\": \"https://github.com/kanbn/kan\", \"tags\": [\"product\"]}, {\"url\": \"https://www.vulncheck.com/advisories/kan-0.5.5-through-0.6.0-unauthenticated-ssrf-via-api-download-attatchment\", \"name\": \"VulnCheck Advisory: Kan 0.5.5 through 0.6.0 Unauthenticated SSRF via /api/download/attatchment\", \"tags\": [\"third-party-advisory\"]}], \"x_generator\": {\"engine\": \"vulncheck-endgame\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"Kan 0.5.5 through 0.6.0 contains an unauthenticated server-side request forgery vulnerability in the /api/download/attatchment route due to an incomplete fix for CVE-2026-32255. When S3_ENDPOINT is unset, attackers can pass arbitrary url query parameters to fetch() to read internal services, localhost ports, and cloud instance metadata.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-918\", \"description\": \"Server-Side Request Forgery (SSRF)\"}]}], \"cpeApplicability\": [{\"nodes\": [{\"negate\": false, \"cpeMatch\": [{\"criteria\": \"cpe:2.3:a:kan:kan:*:*:*:*:*:*:*:*\", \"vulnerable\": true, \"versionEndIncluding\": \"0.6.0\", \"versionStartIncluding\": \"0.5.5\"}], \"operator\": \"OR\"}]}], \"providerMetadata\": {\"orgId\": \"83251b91-4cc7-4094-a5c7-464a1b83ea10\", \"shortName\": \"VulnCheck\", \"dateUpdated\": \"2026-10-14T14:17:03.232Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-110628\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-16T17:16:01.554Z\", \"dateReserved\": \"2026-10-14T13:07:29.410Z\", \"assignerOrgId\": \"83251b91-4cc7-4094-a5c7-464a1b83ea10\", \"datePublished\": \"2026-10-14T14:17:03.232Z\", \"assignerShortName\": \"VulnCheck\"}",
      "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…