CVE-2026-121006
HTTP::Body versions before 1.24_02 for Perl parse the trailer in quadratic time
HTTP::Body versions before 1.24_02 for Perl parse the trailer in quadratic time. Everything after the last chunk in the same call to add() is parsed with HTTP::Headers, which takes time quadratic in the number of fields of one name. For example, it takes several seconds to parse 16 KiB of "a:" lines. A remote attackercan exhause the CPU with a single request. HTTP::Body version 1.25 limits the size and number of lines in the trailer.
Fixes and workarounds
Fix
Upgrade to HTTP::Body version 1.24_02 or later.
Source: CNA: CPANSecFix
The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.
Source: CNA: CPANSecAffected products and versions
| Product | Versions | Authority |
|---|---|---|
HTTP-Body
cpan |
≥ 0; < 1.24_02 (affected, custom)
Other versions: unaffected |
CNA: CPANSec |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
No CVSS assessment reported. An unscored record is not a low-severity determination.
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://metacpan.org/release/GETTY/HTTP-Body-1.24_02/changesCNA: CPANSec · release-notes
- https://github.com/libwww-perl/HTTP-Body/commit/983dd4ca3b863ab513240b02c91c3114fb299389.patchCNA: CPANSec · patch
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