Description
CGI versions before 5.00 for Perl allow HTML injection via text containing --> in comment.

Arguments are placed between <!-- and --> without escaping, so text containing --> closes the comment early.

An application that passes request data to comment can be made to inject HTML into the page.
Published: 2026-11-03
Score: 6.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Solution

Upgrade to CGI 5.00 or later.

Tracking

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Advisories

No advisories yet.

History

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

Type Values Removed Values Added
References
Metrics threat_severity

None

cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

threat_severity

Moderate


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

Type Values Removed Values Added
Description CGI versions before 5.00 for Perl allow HTML injection via text containing --> in comment. Arguments are placed between <!-- and --> without escaping, so text containing --> closes the comment early. An application that passes request data to comment can be made to inject HTML into the page.
Title CGI versions before 5.00 for Perl allow HTML injection via text containing --> in comment
Weaknesses CWE-79
References

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: CPANSec

Published:

Updated: 2026-11-03T23:41:09.606Z

Reserved: 2026-11-02T17:46:59.749Z

Link: CVE-2026-120648

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-11-04T00:17:26.377

Modified: 2026-11-04T00:17:26.377

Link: CVE-2026-120648

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-11-03T23:41:09Z

Links: CVE-2026-120648 - Bugzilla

cve-icon OpenCVE Enrichment

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

Weaknesses
  • CWE-79

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')