🛡️ USN-8459-1 — haproxy

⚪ Unknown ✅ No Known Exploit OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

haproxy vulnerabilities

It was discovered that HAProxy incorrectly handled the FCGI demultiplexer

record length field. A remote attacker could possibly use this issue to

cause incorrect request routing, response smuggling, or other memory safety

issues. (CVE-2026-55203)

It was discovered that HAProxy failed to validate the return value of the

HPACK dynamic table defragmentation function when memory was exhausted. A

remote attacker could possibly use this issue to cause HAProxy to crash,

resulting in a denial of service. (CVE-2026-55204)

Affected software

USN-8459-1 is recorded against 1 package.

  • haproxy (fixed in 3.2.9-1ubuntu2.2)

Timeline and source

Published on 22 June 2026 and last revised on 29 June 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

ubuntu.com (Advisory)
ubuntu.com (Report)
ubuntu.com (Report)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector N/A
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2026-06-22
Updated 2026-08-12
Modified 2026-06-29
Fix URL N/A

Affected Packages

Software From version Fixed in
haproxy — 3.2.9-1ubuntu2.2

Similar Threats

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