CPANSA-HTTP-Body-2026-116531: HTTP-Body vulnerability
| Publisher | giterlizzi | Document category | csaf_security_advisory |
|---|---|---|---|
| Initial release date | 2026-10-28T00:00:00 | Engine | CSAF Perl Toolkit 0.26 |
| Current release date | 2026-10-28T00:00:00 | Build Date | |
| Current version | 1 | Status | final |
| CVSS v3.1 Base Score | Severity | ||
| Original language | Language | en | |
| Also referred to | |||
Vulnerability Description
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.
Vulnerabilities
CVE-2026-116531
Vulnerability DescriptionHTTP::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.
| Weakness | CWE-130 : Improper Handling of Length Parameter Inconsistency |
|---|
Product status
Known affected
| Product | Score | ||||
|---|---|---|---|---|---|
| HTTP-Body less than 1.23_01 |
|
Fixed
- HTTP-Body greater than or equal 1.23_01
giterlizzi
Namespace: https://github.com/giterlizzi/
gdt@cpan.org
References
- CPANSA-HTTP-Body-2026-116531 JSON self
https://raw.githubusercontent.com/giterlizzi/perl-CPANSA-CSAF/develop/csaf/white/2026/cpansa-http-body-2026-116531.json - https://github.com/libwww-perl/HTTP-Body/commit/5869dde9fe6d13f189a435b6583fd63fcc18677a.patch external
https://github.com/libwww-perl/HTTP-Body/commit/5869dde9fe6d13f189a435b6583fd63fcc18677a.patch - https://metacpan.org/release/GETTY/HTTP-Body-1.24/changes external
https://metacpan.org/release/GETTY/HTTP-Body-1.24/changes - CVE-2026-116531 (NVD) external
https://nvd.nist.gov/vuln/detail/CVE-2026-116531
Revision history
| Version | Date of the revision | Summary of the revision |
|---|---|---|
| 1 | Wed Oct 28 00:00:00 2026 | First release |
Sharing rules
TLP:WHITE
For the TLP version see: https://www.first.org/tlp/