CVE-2026-113877 Affecting libhttp-headers-actionpack-perl package, versions <0.10-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN14-LIBHTTPHEADERSACTIONPACKPERL-21692678
- published24 Oct 2026
- disclosed23 Oct 2026
Introduced: 23 Oct 2026
NewCVE-2026-113877 (opens in a new tab)How to fix?
Upgrade Debian:14 libhttp-headers-actionpack-perl to version 0.10-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream libhttp-headers-actionpack-perl package and not the libhttp-headers-actionpack-perl package as distributed by Debian.
See How to fix? for Debian:14 relevant fixed versions and status.
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.