CVE-2025-11374: Hashicorp Consul

Medium severity, CVSS 6.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Consul and Consul Enterprise’s (“Consul”) key/value endpoint is vulnerable to denial of service (DoS) due to incorrect Content Length header validation. This vulnerability, CVE-2025-11374, is fixed in Consul Community Edition 1.22.0 and Consul Enterprise 1.22.0, 1.21.6, 1.20.8 and 1.18.12.

Affected products

• Hashicorp Consul: before 1.18.12 (fixed in 1.18.12); before 1.22.0 (fixed in 1.22.0); from 1.19.0, before 1.20.8 (fixed in 1.20.8); from 1.21.0, before 1.21.6 (fixed in 1.21.6)

Published 2025-10-28. Last modified 2026-06-17.