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No exploitation reportedFix available

CVE-2026-120641

CGI versions before 5.00 for Perl return upload filenames with any client-supplied path, including ../ and Windows paths

No exploitation reported by the sources we read.

  • Published2026-11-04
  • WeaknessCWE-22

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

CGI versions before 5.00 for Perl return upload filenames with any client-supplied path, including ../ and Windows paths. The name returned for an uploaded file is the filename parameter of the part's Content-Disposition header, unchanged. An application that saves the upload under this name can be made to write outside the intended directory.

Timeline

dates in UTC
  1. 2026-11-0323:40CVE publishedCNA

Versions per branch

Products declared by the CNA1 product

As CPANSec, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-03

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • libcgi-pm-perlUbuntu:26.10all versions · no fixed version listed
  • libcgi-pm-perlUbuntu:26.04:LTSall versions · no fixed version listed
  • libcgi-pm-perlUbuntu:24.04:LTSall versions · no fixed version listed
  • libcgi-pm-perlUbuntu:22.04:LTSall versions · no fixed version listed
  • libcgi-pm-perlUbuntu:20.04:LTSall versions · no fixed version listed
  • libcgi-pm-perlUbuntu:18.04:LTSall versions · no fixed version listed
  • libcgi-pm-perlUbuntu:16.04:LTSall versions · no fixed version listed
  • libcgi-pm-perlDebian:14all versions · no fixed version listed

4 more package ranges on OSV.dev

Vendor advisories

  • CVE-2026-120641 Red Hat Product Security4 known affected

    perl-cgi: perl-cgi: arbitrary file write via unsanitized upload filenames

    perl-CGI.src as a component of Red Hat Enterprise Linux 10 · perl-CGI.src as a component of Red Hat Enterprise Linux 7 · perl-CGI.src as a component of Red Hat Enterprise Linux 8 · +1 more

Full record on NVD

Fix

  1. Workaround from the vendor Red Hat Product Security CVE-2026-120641 · 4 products--- CME Mitigation Guidance (2026-11-04) --- Disclaimer: The following mitigation solutions are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from https://cmetaxonomy.org. Customers are advised to indepen…
  2. No fix available, says the vendor Red Hat Product Security CVE-2026-120641 · 4 productsAffected

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof of concept
Metasploit modules
none listed
Metasploit Framework

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2026-11-04
Last Modified
2026-11-09
NVD status
Deferred
GitHub Advisory
GHSA-3hqq-f8xf-6qwx

Frequently asked questions

What is CVE-2026-120641?

CGI versions before 5.00 for Perl return upload filenames with any client-supplied path, including ../ and Windows paths. The name returned for an uploaded file is the filename parameter of the part's Content-Disposition header, unchanged. An application that saves the upload under this name can be made to write outside the intended directory.

Is CVE-2026-120641 actively exploited?

Active exploitation of CVE-2026-120641 has not been confirmed. Its EPSS score was 0.2% on 2026-11-08, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-120641?

CVE-2026-120641 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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