Bug 2562362
| Summary: | CVE-2026-113877 perl-HTTP-Headers-ActionPack: HTTP::Headers::ActionPack: Denial of Service via crafted Accept-Language headers [fedora-43] | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Oleg Sushchenko <osushche> |
| Component: | perl-HTTP-Headers-ActionPack | Assignee: | Emmanuel Seyman <emmanuel> |
| Status: | ON_QA --- | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | 43 | CC: | emmanuel |
| Target Milestone: | --- | Keywords: | Security, SecurityTracking |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | {"flaws": ["ea7d5d24-c73d-47c9-b9b8-a8012c00209c"]} | ||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 2560178 | ||
FEDORA-2026-5ca1419368 (perl-HTTP-Headers-ActionPack-0.10-1.fc43) has been submitted as an update to Fedora 43. https://bodhi.fedoraproject.org/updates/FEDORA-2026-5ca1419368 FEDORA-2026-5ca1419368 has been pushed to the Fedora 43 testing repository. Soon you'll be able to install the update with the following command: `sudo dnf upgrade --enablerepo=updates-testing --refresh --advisory=FEDORA-2026-5ca1419368` You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2026-5ca1419368 See also https://fedoraproject.org/wiki/QA:Updates_Testing for more information on how to test updates. |
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process. 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.