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golang-github-getkin-kin-openapi — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2026-100349

kin-openapi is a Go project for handling OpenAPI files. Prior to 0.146.0, openapi3filter.ValidateResponse passes a nil response header schema to decodeValue when an OpenAPI document declares the header with content instead of schema. The document passes validation, but every response validation for the affected operation dereferences the nil schema and panics even when the response does not contain the declared header. Applications that ingest an untrusted specification can expose this as remote availability impact, while applications using only trusted local specifications still crash when the affected operation is exercised. This issue is fixed in version 0.146.0.

Products
golang-github-getkin-kin-openapi
Affected versions
0.110.0-1, 0.117.0-1, 0.118.0-1, 0.120.0-1, 0.122.0-1, 0.122.0-2, 0.122.0-3, 0.123.0-1, 0.124.0-1, 0.135.0-1
Fixed versions
Not specified
CVEs
CVE-2026-100349
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 22:33 UTC · Revision 1

Source evidence

DEBIAN-CVE-2026-100349

core-osv · Original source

Published 15 Oct 2026, 16:17 UTC

kin-openapi is a Go project for handling OpenAPI files. Prior to 0.146.0, openapi3filter.ValidateResponse passes a nil response header schema to decodeValue when an OpenAPI document declares the header with content instead of schema. The document passes validation, but every response validation for the affected operation dereferences the nil schema and panics even when the response does not contain the declared header. Applications that ingest an untrusted specification can expose this as remote availability impact, while applications using only trusted local specifications still crash when the affected operation is exercised. This issue is fixed in version 0.146.0.

osv:DEBIAN-CVE-2026-100349

golang-github-getkin-kin-openapi

Fixed versions: Not specified

golang-github-getkin-kin-openapi

Fixed versions: Not specified

golang-github-getkin-kin-openapi

Fixed versions: Not specified

Complete source record
{
  "id": "a5ab7a72275502cd0308be97c3a5dd48e925c681cdc631b9e6d541c1bea0e0f3",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-100349",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-100349",
    "summary": "kin-openapi is a Go project for handling OpenAPI files. Prior to 0.146.0, openapi3filter.ValidateResponse passes a nil response header schema to decodeValue when an OpenAPI document declares the header with content instead of schema. The document passes validation, but every response validation for the affected operation dereferences the nil schema and panics even when the response does not contain the declared header. Applications that ingest an untrusted specification can expose this as remote availability impact, while applications using only trusted local specifications still crash when the affected operation is exercised. This issue is fixed in version 0.146.0.",
    "evidence": "osv:DEBIAN-CVE-2026-100349",
    "products": [
      {
        "name": {
          "value": "golang-github-getkin-kin-openapi",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.110.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.117.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.118.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.120.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.122.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.122.0-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.122.0-3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.123.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.124.0-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "0.135.0-1",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "golang-github-getkin-kin-openapi",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.124.0-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "0.135.0-1",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "golang-github-getkin-kin-openapi",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "0.124.0-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "0.135.0-1",
            "evidence": "/affected/2/versions"
          }
        ]
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2026-100349",
      "aliases": [
        "DEBIAN-CVE-2026-100349"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "golang-github-getkin-kin-openapi",
            "purl": "pkg:deb/debian/golang-github-getkin-kin-openapi?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "versions": [
            "0.110.0-1",
            "0.117.0-1",
            "0.118.0-1",
            "0.120.0-1",
            "0.122.0-1",
            "0.122.0-2",
            "0.122.0-3",
            "0.123.0-1",
            "0.124.0-1",
            "0.135.0-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-100349.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "golang-github-getkin-kin-openapi",
            "purl": "pkg:deb/debian/golang-github-getkin-kin-openapi?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "versions": [
            "0.124.0-1",
            "0.135.0-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-100349.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "golang-github-getkin-kin-openapi",
            "purl": "pkg:deb/debian/golang-github-getkin-kin-openapi?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "versions": [
            "0.124.0-1",
            "0.135.0-1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-100349.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-23T17:47:23.800532164Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-100349"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-100349"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-100349",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 416694,
  "published_at": "2026-10-15T16:17:30.64+00:00"
}