Bug 2562347

Summary: CVE-2026-111805 trafficserver: Apache Traffic Server: Denial of Service via truncated HTTP/2 Content-Length header [fedora-all]
Product: [Fedora] Fedora Reporter: Oleg Sushchenko <osushche>
Component: trafficserverAssignee: Jered Floyd (Fedora) <jered>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: high Docs Contact:
Priority: high    
Version: rawhideCC: jered
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["af11777a-bbfc-4c30-9833-82eac06ff19d"]}
Fixed In Version: trafficserver-10.2.1-1.fc45 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-10-31 18:49:50 UTC 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: 2558492    

Description Oleg Sushchenko 2026-10-27 19:30:33 UTC 
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.

Apache Traffic Server can be used to exhaust an HTTP/1.1 origin's worker pool via a truncated HTTP/2 Content-Length value.



This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.15, from 10.0.0 through 10.1.4, 10.2.0.



Users are recommended to upgrade to version 9.2.16, 10.1.5, or 10.2.1, which fix the issue.
Comment 1 Fedora Update System 2026-10-28 01:54:47 UTC 
FEDORA-2026-84f58bb437 (trafficserver-10.2.1-1.fc45) has been submitted as an update to Fedora 45.
https://bodhi.fedoraproject.org/updates/FEDORA-2026-84f58bb437
Comment 2 Fedora Update System 2026-10-31 18:49:50 UTC 
FEDORA-2026-84f58bb437 (trafficserver-10.2.1-1.fc45) has been pushed to the Fedora 45 stable repository.
If problem still persists, please make note of it in this bug report.