CVE-2024-31309: Apache Traffic Server

High severity, CVSS 7.5. EPSS: 94.6% chance of exploitation in the next 30 days.

HTTP/2 CONTINUATION DoS attack can cause Apache Traffic Server to consume more resources on the server.  Version from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.3 are affected. Users can set a new setting (proxy.config.http2.max_continuation_frames_per_minute) to limit the number of CONTINUATION frames per minute.  ATS does have a fixed amount of memory a request can use and ATS adheres to these limits in previous releases. Users are recommended to upgrade to versions 8.1.10 or 9.2.4 which fixes the issue.

Affected products

• Apache Traffic Server: from 8.0.0, before 8.1.10 (fixed in 8.1.10); from 9.0.0, before 9.2.4 (fixed in 9.2.4)
• Debian Debian Linux: version 10.0 only
• Fedoraproject Fedora: version 38 only; version 39 only; version 40 only

Published 2024-04-10. Last modified 2026-06-17.