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CVE-2026-26080BIT-HAPROXY-2026-26080

HAProxy Community Edition 3.2.x through 3.3.x before 3.3.3 can enter a loop or crash because varint is mishandled.

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 3.2.12, 3.3.3
1 proof of concept on GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: partial

Summary

HAProxy Community Edition 3.2.x through 3.3.x before 3.3.3 can enter a loop or crash because varint is mishandled. HAProxy Enterprise and ALOHA are also affected.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: partial

  3. Record last updated

Affected versions

  • HAProxy HAProxy

    From 3.2 · fixed in 3.2.12; From 3.3 · fixed in 3.3.3

  • haproxyBitnami

    From 3.2.0 · fixed in 3.2.12; From 3.3.0 · fixed in 3.3.3

References 3

haproxy.org

git.haproxy.org

GitHub · Zeerg/haproxy-quic-cves-2026