CVE-2026-116531: vulnerability in HTTP-Body
HTTP::Body versions before 1.23_01 for Perl lose track of chunk boundaries in chunked request bodies when a read ends inside a chunk
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 lose track of chunk boundaries in chunked request bodies when a read ends inside a chunk.
In chunked mode, used when no content length is given, add() treats a chunk as complete once the buffer is as long as the chunk's declared size, but the buffer still holds the chunk-size line. When a read ends in the last bytes of a chunk, add() takes the chunk short and parses the leftover data as the next chunk-size line.
A remote attacker can make a chunked body never complete, hanging a server that reads until the body is done, and may make it complete early, leaving the remaining bytes to be read as the next request.
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-2026-116133—HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic rescanning of a multipart body with a missing or malformed boundaryEPSS 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-2026-116285—HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic regex backtracking when parsing chunked request bodiesEPSS 0.3%