CVE-2026-113877
CVE-2026-113877 · HTTP::Headers::ActionPack versions before 0.10 for Perl allow CPU exhaustion via Accept-Language ranges matched as regular expressions
This page contains facts from public vulnerability sources. Check the original advisory before updating.
HTTP::Headers::ActionPack versions before 0.10 for Perl allow CPU exhaustion via Accept-Language ranges matched as regular expressions. _language_match interpolates each Accept-Language range into the pattern `/^$range\-/i` without escaping it, so regular expression syntax in the header reaches the regex engine. A 12-byte range such as `(a?|b?){26}z` backtracks for seconds, and each increment of the quantifier doubles the time. An invalid range such as `(` fails to compile. A remote attacker can exhaust CPU, or make choose_language die, in any application that passes an untrusted Accept-Language header to it.
EPSS 0.4% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
libhttp-headers-actionpack-perl Debian:12
- Versions
- 0.09-2
- 0.09-3
- 0.09-4
- 0.10-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
libhttp-headers-actionpack-perl Debian:13
- Versions
- 0.09-3
- 0.09-4
- 0.10-1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
libhttp-headers-actionpack-perl Debian:14
- Versions
- 0.09-3
- 0.09-4
- Affected ranges
- ECOSYSTEM: < 0.10-1
Update to 0.10-1