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 chunk
CriticalCVSS 9.1
EPSS 0.40%
- Published
- Updated
- Exploit status
- No public exploit known
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.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| cpan HTTP-Body | < 1.23_01 | 1.23_01 |
| debian/libhttp-body-perl(Debian:12) | All versions | No fix listed |
| debian/libhttp-body-perl(Debian:12) | = 1.22-2 | No fix listed |
| debian/libhttp-body-perl(Debian:12) | = 1.23-1 | No fix listed |
| debian/libhttp-body-perl(Debian:12) | = 1.24.01-1 | No fix listed |
| debian/libhttp-body-perl(Debian:13) | All versions | No fix listed |
| debian/libhttp-body-perl(Debian:13) | = 1.23-1 | No fix listed |
| debian/libhttp-body-perl(Debian:13) | = 1.24.01-1 | No fix listed |
| debian/libhttp-body-perl(Debian:14) | < 1.24.01-1 | 1.24.01-1 |
| debian/libhttp-body-perl(Debian:14) | = 1.23-1 | No fix listed |
| ubuntu/libhttp-body-perl(Ubuntu:22.04) | All versions | No fix listed |
| ubuntu/libhttp-body-perl(Ubuntu:24.04) | All versions | No fix listed |
| ubuntu/libhttp-body-perl(Ubuntu:26.04) | All versions | No fix listed |
| ubuntu/libhttp-body-perl(Ubuntu:26.10) | All versions | No fix listed |
References
- github.com patch
- metacpan.org release-notes
- Debian Security Tracker CVE-2026-116531 vendor-advisory
- Ubuntu CVE tracker vendor-advisory
- www.cve.org
- bugs.debian.org issue-tracking