Vulnerability 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.
Related Weaknesses (CWE)
References
- https://github.com/libwww-perl/HTTP-Body/commit/3abc958d78bd84bf4abb87bad79b9432
- https://github.com/libwww-perl/HTTP-Body/commit/9ab46daaede02fb13ea55a7e3ede34c8
- https://metacpan.org/release/GETTY/HTTP-Body-1.24_01/changes
FAQ
What is CVE-2026-117500?
CVE-2026-117500 is a documented vulnerability. 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 upload...
How severe is CVE-2026-117500?
CVSS scoring is not yet available for CVE-2026-117500. Check NVD for updates.
Is there a patch for CVE-2026-117500?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.