Bug 2562348

Summary: CVE-2026-111810 trafficserver: trafficserver: Denial of Service via unthrottled logging of stripped headers [epel-all]
Product: [Fedora] Fedora EPEL 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: epel10CC: jered
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["9cf0fb36-6b5e-42c7-bb20-dd1ca2e21805"]}
Fixed In Version: trafficserver-10.2.1-1.el10_3 Doc Type: ---
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2026-10-30 00:28:55 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: 2558493    

Description Oleg Sushchenko 2026-10-27 19:31:05 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 9.2.15, 10.1.4 and 10.2.0 write one unthrottled diagnostic log line for every internal @ header they strip, so a request carrying many such headers makes the proxy write far more log data than the request contains.



This issue affects Apache Traffic Server: 9.2.15, 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 01:51:09 UTC 
FEDORA-EPEL-2026-17e8041e53 (trafficserver-10.2.1-1.el10_3) has been submitted as an update to Fedora EPEL 10.3.
https://bodhi.fedoraproject.org/updates/FEDORA-EPEL-2026-17e8041e53
Comment 2 Fedora Update System 2026-10-30 00:28:55 UTC 
FEDORA-EPEL-2026-17e8041e53 (trafficserver-10.2.1-1.el10_3) has been pushed to the Fedora EPEL 10.3 stable repository.
If problem still persists, please make note of it in this bug report.