USN-8036-1: HAProxy vulnerability
Publication date
12 February 2026
Overview
HAProxy could be made to crash if it received specially crafted network traffic.
Releases
Packages
- haproxy - fast and reliable load balancing reverse proxy
Details
Asim Viladi Oglu Manizada discovered that HAProxy incorrectly handled
certain INITIAL packets. A remote attacker could possibly use this issue
to cause HAProxy to crash, resulting in a denial of service.
Asim Viladi Oglu Manizada discovered that HAProxy incorrectly handled
certain INITIAL packets. A remote attacker could possibly use this issue
to cause HAProxy to crash, resulting in a denial of service.
Update instructions
In general, a standard system update will 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 | haproxy – 3.0.12-0ubuntu0.25.10.3 | ||
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.