CVE-2026-120642
CGI versions before 5.00 for Perl return request-derived values untainted under taint mode
CGI versions before 5.00 for Perl return request-derived values untainted under taint mode. The upload filename, uploadInfo values, some path_info and script_name values, Accept results, and the name lists from url_param and cookie are returned without the taint flag, as is a cookie named expires from 4.67 on. These values come from regex captures or hash keys, which Perl does not taint, so they pass -T checks unvalidated.
Fixes and workarounds
Fix
Upgrade to CGI 5.00 or later.
Source: CNA: CPANSecFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: CPANSecAffected products and versions
| Product | Versions | Authority |
|---|---|---|
CGI
cpan |
≥ 0; < 5.00 (affected, custom)
Other versions: unaffected |
CNA: CPANSec |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://metacpan.org/release/LEEJO/CGI-4.72/source/lib/CGI.pmCNA: CPANSec · technical-description
- https://metacpan.org/release/LEEJO/CGI-5.00/changesCNA: CPANSec · release-notes
- https://github.com/leejo/CGI.pm/commit/6ae50ce84073b8f68a6e3750479de70d5b8f2dcf.patchCNA: CPANSec · patch
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