CVE-2026-120642

CriticalCVSS 9.1/10Last modified Nov 9, 2026

Description

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.

Metrics

CVSS 3.1 9.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-1173

Affected software

VendorProductVersions
——< 5.00

References

Timeline

Published
Nov 4, 2026
Last modified
Nov 9, 2026
NVD status
Deferred

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CVE-2026-120642: Critical severity, CVSS 9.1 | Vulnix