CVE-2025-11375

Consul's event endpoint is vulnerable to denial of service

State: Published
Severity: 6.5 Medium
Published: Oct 28, 2025
Updated: Dec 9, 2025
Reserved: Oct 6, 2025

Description

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.

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-2025-28-consuls-event-endpoint-is-vulnerable-to-denial-of-service/76723

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