CVE-2026-120643
Public on 2026-11-04
Modified on 2026-11-05
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.
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.
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 2 - Core | perl-CGI | Not Affected | ||
| Amazon Linux 2023 | perl-CGI | Pending Fix | ||
| Amazon Linux 2027 Preview | perl-CGI | Pending Fix |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |