CVE-2026-120631

Full vulnerability record from the local CVENow database.

Description

CGI::Cookie versions from 4.67 before 5.00 for Perl allow denial of service via the client cookie expires value used as a regex in parse. CGI's cookie method reads the Cookie request header through parse, which interpolates the header's expires value unescaped into the substitution pattern that removes it from the cookie string. A client can make the request die with an invalid pattern, or tie up the process with one that backtracks catastrophically.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

9b29abf9-4ab0-4765-b253-1875cd9b441e

Published

2026-11-04 00:17:24.187000

Last modified

2026-11-04 00:17:24.187000

View original CVE JSON

{
  "id": "CVE-2026-120631",
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "published": "2026-11-04T00:17:24.187",
  "lastModified": "2026-11-04T00:17:24.187",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "CGI::Cookie versions from 4.67 before 5.00 for Perl allow denial of service via the client cookie expires value used as a regex in parse.\n\nCGI's cookie method reads the Cookie request header through parse, which interpolates the header's expires value unescaped into the substitution pattern that removes it from the cookie string.\n\nA client can make the request die with an invalid pattern, or tie up the process with one that backtracks catastrophically."
    }
  ],
  "affected": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "collectionURL": "https://cpan.org/modules",
          "packageName": "CGI",
          "modules": [
            "CGI::Cookie"
          ],
          "programFiles": [
            "lib/CGI/Cookie.pm"
          ],
          "programRoutines": [
            {
              "name": "CGI::Cookie::parse"
            },
            {
              "name": "CGI::cookie"
            }
          ],
          "repo": "https://github.com/leejo/CGI.pm",
          "packageURL": "pkg:cpan/CGI",
          "versions": [
            {
              "version": "4.67",
              "lessThan": "5.00",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "weaknesses": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-625"
        },
        {
          "lang": "en",
          "value": "CWE-1333"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/leejo/CGI.pm/commit/95e044af2ec24d99a61e99d6291580ad47aff641.patch",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://metacpan.org/release/LEEJO/CGI-4.72/source/lib/CGI/Cookie.pm",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://metacpan.org/release/LEEJO/CGI-5.00/changes",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    }
  ]
}