Ubuntu Security Notices USN-8050-1 USN-8050-1: Apache Traffic Server vulnerability Publication date 18 February 2026 Overview trafficserver could be made to crash if it received specially crafted input. Releases 25.10 24.04 LTS 22.04 LTS Packages trafficserver - fast, scalable and extensible HTTP/1.1 and HTTP/2.0 caching proxy Details Masakazu Kitajo discovered that Apache Traffic Server did not properly handle the Valid Host header field. An attacker could possibly use this issue to cause a denial of service (DoS). Masakazu Kitajo discovered that Apache Traffic Server did not properly handle the Valid Host header field. An attacker could possibly use this issue to cause a denial of service (DoS). Update instructions After a standard system update you need to restart Apache Traffic Server to make all the necessary changes. Learn more about how to get the fixes. The problem can be corrected by updating your system to the following package versions: Ubuntu Release Package Version 25.10 questing trafficserver – 9.2.5+ds-1ubuntu2.1 24.04 LTS noble trafficserver – 9.2.3+ds-1+deb12u1ubuntu0.1 22.04 LTS jammy trafficserver – 9.1.1+ds-2ubuntu0.1 Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. Get Ubuntu Pro References CVE-2024-50305 CVE-2024-50305