CVE-2025-11374

Consul's KV endpoint is vulnerable to denial of service

State: Published
Severity: 6.5 Medium
Published: Oct 28, 2025
Updated: Apr 17, 2026
Reserved: Oct 6, 2025

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	HashiCorp

Weaknesses

CWE-770 Allocation of Resources Without Limits or Throttling

Affected Products

Product	Versions
ConsulHashiCorp	before 1.22.0Affected
Consul EnterpriseHashiCorp	before 1.22.0Affectedfrom 1.21.6Not affectedfrom 1.20.8Not affectedfrom 1.18.12Not affected

References

https://discuss.hashicorp.com/t/hcsec-2025-29-consuls-kv-endpoint-is-vulnerable-to-denial-of-service/76724

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.