Denial of Service Vulnerability in Consul and Consul Enterprise
CVE-2025-11374

6.5MEDIUM

Key Information:

Vendor

Hashicorp
Status
Consul
Consul Enterprise
Vendor
CVE Published:
28 October 2025

What is CVE-2025-11374?

Consul and Consul Enterprise are impacted by a vulnerability affecting the key/value endpoint that allows for denial of service attacks. This flaw arises from improper validation of the Content Length header, which can be exploited to disrupt services and degrade system performance. Users are advised to upgrade to the fixed versions to mitigate potential risks.

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Deploy the Patch

Affected Version(s)

Consul 64 bit 0 < 1.22.0

Consul Enterprise 64 bit 0 < 1.22.0

References

https://discuss.hashicorp.com/t/hcsec-2025-29-consuls-kv-...

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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