Vulnerability · Published Nov 3, 2026 · Assigned by CPANSec
CVE-2026-120641CGI versions before 5.00 for Perl return upload filenames with any client-supplied path, including ../ and Windows paths
Unrated
In plain English
A path traversal in CGI. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).
Severity (CVSS )–Not rated
Exploit odds (30 days)0.2%top 90.6% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | libcgi-pm-perl | no fix listed | DEBIAN-CVE-2026-120641 |
| Debian:13 | libcgi-pm-perl | no fix listed | DEBIAN-CVE-2026-120641 |
| Debian:14 | libcgi-pm-perl | no fix listed | DEBIAN-CVE-2026-120641 |
| Ubuntu:22.04:LTS | libcgi-pm-perl | no fix listed | UBUNTU-CVE-2026-120641 |
| Ubuntu:24.04:LTS | libcgi-pm-perl | no fix listed | UBUNTU-CVE-2026-120641 |
| Ubuntu:26.04:LTS | libcgi-pm-perl | no fix listed | UBUNTU-CVE-2026-120641 |
| Ubuntu:26.10 | libcgi-pm-perl | no fix listed | UBUNTU-CVE-2026-120641 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| CGI | 0 – before 5.00 |
Weakness: CWE-22