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.
Published: 2026-11-03
Score: 8.1 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Remediation

Vendor Solution

Upgrade to CGI 5.00 or later.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

History

Wed, 04 Nov 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-501
References
Metrics threat_severity

None

cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'}

threat_severity

Important


Wed, 04 Nov 2026 00:00:00 +0000

Type Values Removed Values Added
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.
Title CGI versions before 5.00 for Perl return request-derived values untainted under taint mode
Weaknesses CWE-1173
References

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: CPANSec

Published:

Updated: 2026-11-03T23:40:44.224Z

Reserved: 2026-11-02T17:42:30.753Z

Link: CVE-2026-120642

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-04T00:17:25.650

Modified: 2026-11-04T00:17:25.650

Link: CVE-2026-120642

cve-icon Redhat

Severity : Important

Publid Date: 2026-11-03T23:40:44Z

Links: CVE-2026-120642 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-11-04T08:15:10Z

Weaknesses
  • CWE-1173

    Improper Use of Validation Framework

  • CWE-501

    Trust Boundary Violation