HAProxy vulnerabilities and fixes

CVEs that mention HAProxy, ranked by priority. 2 tracked.

HAProxy has 2 tracked vulnerabilities, 0 critical. A fixed release or vendor patch exists for 2. Most recent: 2026-10-22. Highest priority: CVE-2026-110354 (score 45/100).

• CVE-2026-110354 HIGH 7.5 HAProxy 3 before 3.4.6 allows a remote unauthenticated attacker to cause a denial of service (persistent worke
• CVE-2026-110353 HIGH 7.5 HAProxy 3.2 before 3.4.6 allows a remote unauthenticated attacker to cause a denial of service (worker-thread

FAQ

How do I fix HAProxy vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is HAProxy being exploited right now?

None of the tracked HAProxy CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which HAProxy CVE should I patch first?

CVE-2026-110354 currently ranks highest (45/100): HAProxy 3 before 3.4.6 allows a remote unauthenticated attacker to cause a denial of service (persistent worke.

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