CVE-2026-120642
Publication date 4 November 2026
Last updated 12 November 2026
Ubuntu priority
Description
CGI versions before 5.00 for Perl return request-derived values untainted under taint mode. The upload filename, uploadInfo values, some path_info and script_name values, Accept results, and the name lists from url_param and cookie are returned without the taint flag, as is a cookie named expires from 4.67 on. These values come from regex captures or hash keys, which Perl does not taint, so they pass -T checks unvalidated.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| libcgi-pm-perl | 26.10 stonking |
Needs evaluation
|
| 26.04 LTS resolute |
Needs evaluation
|
|
| 24.04 LTS noble |
Needs evaluation
|
|
| 22.04 LTS jammy |
Needs evaluation
|
|
| 20.04 LTS focal |
Needs evaluation
|
|
| 18.04 LTS bionic |
Needs evaluation
|
|
| 16.04 LTS xenial |
Needs evaluation
|
Severity score breakdown
CVSS version: CVSS v3.0
Base score
9.1 · Critical
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-120642
- https://lists.security.metacpan.org/cve-announce/msg/44874935/
- https://github.com/leejo/CGI.pm/commit/6ae50ce84073b8f68a6e3750479de70d5b8f2dcf (v5.01)
- https://github.com/leejo/CGI.pm/commit/6ae50ce84073b8f68a6e3750479de70d5b8f2dcf.patch
- https://metacpan.org/release/LEEJO/CGI-4.72/source/lib/CGI.pm
- https://metacpan.org/release/LEEJO/CGI-5.00/changes