CGI::Cookie versions before 5.00 for Perl allow cookie attribute injection via unvalidated path, domain and expires values

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-120644
StatePUBLISHED
AssignerCPANSec
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-11-04 00:17:25 UTC
Updated2026-11-04 00:17:25 UTC
DescriptionCGI::Cookie versions before 5.00 for Perl allow cookie attribute injection via unvalidated path, domain and expires values. The path, domain and expires values are written into the Set-Cookie header without checking for semicolons or control characters. An application that sets them from request data can be made to add other cookie attributes, such as Domain or SameSite.

Risk And Classification

Problem Types: CWE-116 | CWE-116 CWE-116 Improper Encoding or Escaping of Output

References

ReferenceSourceLinkTags
github.com/leejo/CGI.pm/commit/0b3527faaa9de55f79ca7d59dd3bcfb2c5540e00.... 9b29abf9-4ab0-4765-b253-1875cd9b441e github.com
metacpan.org/release/LEEJO/CGI-5.00/changes 9b29abf9-4ab0-4765-b253-1875cd9b441e metacpan.org
metacpan.org/release/LEEJO/CGI-4.72/source/lib/CGI/Cookie.pm 9b29abf9-4ab0-4765-b253-1875cd9b441e metacpan.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Solutions

CNA: Upgrade to CGI 5.00 or later.

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