CVE-2025-11375: Hashicorp Consul

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

Consul and Consul Enterprise’s (“Consul”) event endpoint is vulnerable to denial of service (DoS) due to lack of maximum value on the Content Length header. This vulnerability, CVE-2025-11375, 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.