Back to vendor advisories
Ubuntu Security NoticesUSN-8972-2

USN-8972-2: HAProxy regression

Severity not listed 2 CVEs Published Nov 5, 2026 at 12:52 PM UTC

Summary

USN-8972-1 fixed vulnerabilities in HAProxy. On Ubuntu 22.04 LTS, the update caused a regression when processing certain chunked requests. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

It was discovered that HAProxy incorrectly handled truncated HTTP/2 PING frames. A remote attacker could possibly use this issue to cause HAProxy to consume excessive CPU resources, leading to a denial of service. (CVE-2026-110353)

It was discovered that HAProxy incorrectly handled certain HTTP/1.1 chunked requests. A remote attacker could possibly use this issue to cause HAProxy to consume excessive CPU resources, leading to a denial of service. (CVE-2026-110354)

Products covered

A separate affected-products list was not included in the collected bulletin.

Remediation

USN-8972-1 fixed vulnerabilities in HAProxy.

CVEs in this advisory 2

Updates

  1. Published by Ubuntu

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.