USN-8398-1 fixed a vulnerability in nginx. The update caused a regression and was temporarily reverted in USN-8398-2. This update introduces a complete fix for CVE-2026-49975.
We apologize for the inconvenience.
Original advisory details:
It was discovered that nginx incorrectly handled certain cookie headers in the HTTP/2 implementation. A remote attacker could possibly use this issue to cause nginx to consume excessive resources, resulting in a denial of service.
1.18.0-6ubuntu14.151.24.0-2ubuntu7.121.28.0-6ubuntu1.71.28.3-2ubuntu1.5