{"id":"CVE-2026-117500","title":"HTTP::Body versions before 1.24_01 for Perl allow CPU exhaustion via regex backtracking on the filename of a multipart upload","summary":"HTTP::Body versions before 1.24_01 for Perl allow CPU exhaustion via regex backtracking on the filename of a multipart upload.\n\nFor every file part, the multipart parser finds the suffix of the uploaded filename by matching the default $…","severity":"none","cwe":["CWE-1333"],"product":"HTTP-Body","affected":["HTTP-Body < 1.24_01"],"published":"2026-10-28","updated":"2026-10-28","sourceUpdated":"2026-10-28T17:17:11.051Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-117500","references":[{"url":"https://github.com/libwww-perl/HTTP-Body/commit/9ab46daaede02fb13ea55a7e3ede34c8b918d8ca.patch"},{"url":"https://github.com/libwww-perl/HTTP-Body/commit/3abc958d78bd84bf4abb87bad79b9432eab7e694.patch"},{"url":"https://metacpan.org/release/GETTY/HTTP-Body-1.24_01/changes"}],"tags":["cve.org"],"ingestedAt":"2026-10-28T18:15:46.397Z","slug":"CVE-2026-117500","body":"## Overview\n\nHTTP::Body versions before 1.24_01 for Perl allow CPU exhaustion via regex backtracking on the filename of a multipart upload.\n\nFor 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.\n\nA 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.\n\n## Affected\n\n- `HTTP-Body < 1.24_01`\n\n## Remediation\n\nUpgrade to HTTP-Body 1.24_01 or later.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}