CVE-2026-120648 Details
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.
A vulnerability allowing HTML injection has been identified in CGI versions prior to 5.00 for Perl. This issue arises from the comment() function, which inserts text between HTML comment tags without proper escaping. As a result, text containing a closing comment sequence can prematurely terminate the comment and inject HTML into the page. The vulnerability can be exploited by an application that passes request data to the comment function.
Users are advised to upgrade to CGI version 5.00 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 4, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/leejo/CGI.pm/commit/6a17eb84703d84bca86b0079f5870ca9c921ffd4.patch | CPANSec | Source CodeVendor |
| https://metacpan.org/release/LEEJO/CGI-4.72/source/lib/CGI.pm | CPANSec | Source CodeVendor |
| https://metacpan.org/release/LEEJO/CGI-5.00/changes | CPANSec | AdvisoryBundleVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | CPANSec |
Affected Products
| Product | Versions |
|---|---|
| CGI | < 5.00 |
CPE
Remediation
| |
Change History
1 change record found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 4, 2026 | New CVE Received | CPANSec |