CVE-2026-113877
Published Oct 23, 2026
Last updated 2 days ago
- Description
- 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.
- Source
- 9b29abf9-4ab0-4765-b253-1875cd9b441e
- NVD status
- Received
- 9b29abf9-4ab0-4765-b253-1875cd9b441e
- CWE-624
- Hype score
- Not currently trending