{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0.145.0"
              },
              {
                "fixed": "0.146.0"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "88aa64c7cbd03ecadbb419c473bdcaa8b0124c6b"
            },
            {
              "fixed": "335f4e6abe8ecb82856651f30ed955834d90e15c"
            }
          ],
          "repo": "https://github.com/getkin/kin-openapi",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-h4r5-mxv5-8mjc"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-1050",
      "CWE-400",
      "CWE-770"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100350.json"
  },
  "details": "kin-openapi is a Go project for handling OpenAPI files. From 0.145.0 until 0.146.0, openapi3filter repeatedly calls regexp.MustCompile for the same parameter-name regular expression inside the per-query-key loop in urlValuesDecoder.DecodeObject used to decode a deepObject query parameter. An unauthenticated remote client can send an affected endpoint a request containing many unrelated query keys, causing ValidateRequest to perform work and allocations proportional to the attacker-controlled key count for every deepObject parameter. The expression itself is fixed and this is not regular expression denial of service; the resource consumption comes from loop-invariant recompilation. This issue is fixed in version 0.146.0.",
  "id": "CVE-2026-100350",
  "modified": "2026-10-16T10:30:45.311266449Z",
  "published": "2026-10-15T15:37:19.077Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100350.json"
    },
    {
      "type": "FIX",
      "url": "https://github.com/getkin/kin-openapi/commit/d090e36b2f1c42c898ba2a687a8f6e25f5ca727f"
    },
    {
      "type": "WEB",
      "url": "https://github.com/getkin/kin-openapi/releases/tag/v0.146.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/getkin/kin-openapi/security/advisories/GHSA-h4r5-mxv5-8mjc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-100350"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "kin-openapi deepObject query decoding repeatedly compiles an invariant regular expression"
}