CVE-2026-116133: vulnerability in HTTP-Body
HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic rescanning of a multipart body with a missing or malformed boundary
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.3%
HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic rescanning of a multipart body with a missing or malformed boundary.
Before the first part, and between parts, the multipart parser searches the whole buffered body for the next boundary. On a miss it keeps everything and searches again from the start when the next chunk arrives. A body with no boundary, or with a delimiter followed by neither CRLF nor "--", is therefore rescanned on every chunk, taking time quadratic in its size.
A remote attacker can exhaust worker CPU with a few such requests.
Affected products
HTTP-BodyRelated CVEs — HTTP-Body
In the same product, most dangerous first.
CVE-2026-116135—HTTP::Body versions before 1.23_01 for Perl drop mixed-case percent escapes from urlencoded form fields instead of decoding themEPSS 0.3%CVE-2026-116132—HTTP::Body versions before 1.23_01 for Perl leave the temporary file of an incomplete multipart upload on diskEPSS 0.3%CVE-2026-116134—HTTP::Body versions before 1.23_01 for Perl allow memory exhaustion via an unbounded multipart part header blockEPSS 0.3%CVE-2026-116131—HTTP::Body versions before 1.23_01 for Perl allow memory and temporary file exhaustion via an unlimited number of form fields and multipart partsEPSS 0.3%CVE-2026-116531—HTTP::Body versions before 1.23_01 for Perl lose track of chunk boundaries in chunked request bodies when a read ends inside a chunkEPSS 0.3%CVE-2026-116285—HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic regex backtracking when parsing chunked request bodiesEPSS 0.3%