CVE-2026-117500
Publication date 28 October 2026
Last updated 6 November 2026
Ubuntu priority
Description
HTTP::Body versions before 1.24_01 for Perl allow CPU exhaustion via regex backtracking on the filename of a multipart upload. For every file part, the multipart parser finds the suffix of the uploaded filename by matching the default $basename_regexp, qr/[^.]+(\.[^\\\/]+)$/, against the whole basename. A basename made of many dots and ending in a backslash makes the regex backtrack in time quadratic in its length. A remote attacker can exhaust CPU with one request, as a basename of about 32 KB takes several seconds to match and every file part is matched separately.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| libhttp-body-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
7.5 · High
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References
Other references
- https://www.cve.org/CVERecord?id=CVE-2026-117500
- https://lists.security.metacpan.org/cve-announce/msg/44711935/
- https://github.com/libwww-perl/HTTP-Body/commit/3abc958d78bd84bf4abb87bad79b9432eab7e694.patch
- https://github.com/libwww-perl/HTTP-Body/commit/9ab46daaede02fb13ea55a7e3ede34c8b918d8ca.patch
- https://metacpan.org/release/GETTY/HTTP-Body-1.24_01/changes