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VULNERABILITIES

CVE-2026-120631 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NDDVolerionCVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/leejo/CGI.pm/commit/95e044af2ec24d99a61e99d6291580ad47aff641.patch CPANSecSource CodeVendor
https://metacpan.org/release/LEEJO/CGI-4.72/source/lib/CGI/Cookie.pm CPANSecSource CodeVendor
https://metacpan.org/release/LEEJO/CGI-5.00/changes CPANSecAdvisoryBundleVendor

Weakness Enumeration

CWE-IDCWE NameSource
CWE-1333Inefficient Regular Expression ComplexityCPANSec
CWE-625Permissive Regular ExpressionCPANSec

Affected Products

ProductVersions
CGI::Cookie
>= 4.67, < 5.00

CPE

  • No CPEs found in CPE dictionary for this product.

Remediation

  • Upgrade: 5.00moderate effort

Change History

1 change record found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-120631
NVD Published Date:
Nov 4, 2026
NVD Last Modified:
Nov 4, 2026
Source:
CPANSec
CVE-2026-120631 Details - Not Deferred