CVE-2026-120643

MediumCVSS 6.1/10Last modified Nov 9, 2026

Description

CGI versions from 4.62 before 5.00 for Perl allow cross-site scripting via a raw apostrophe in URLs returned by url and self_url.

Both pass the URL through URI's canonical method, which leaves an apostrophe in the path raw and decodes the %27 that query parameter escaping produces, so an apostrophe in the request path or a parameter appears raw in the result.

An application that places the URL in a single-quoted HTML attribute or JavaScript string is open to cross-site scripting.

Metrics

CVSS 3.1 6.1/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness enumeration

CWE-79

Affected software

No affected versions have been published.

Timeline

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

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