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CVE-2025-11374

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Date: October 28, 2025

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.

Severity Score

Related Resources (9)

https://nvd.nist.gov/vuln/detail/CVE-2025-11374
https://github.com/advisories/GHSA-7g3r-8c6v-hfmr
https://github.com/hashicorp/consul/commit/72a358cd02533477536ad4bd2b781f520fa7fac6
https://github.com/hashicorp/consul
https://pkg.go.dev/vuln/GO-2025-4081
https://github.com/hashicorp/consul/pull/22916
https://discuss.hashicorp.com/t/hcsec-2025-29-consuls-kv-endpoint-is-vulnerable-to-denial-of-service/76724
https://github.com/hashicorp/consul/releases/tag/v1.22.0
https://www.mend.io/vulnerability-database/CVE-2025-11374

Severity Score

Weakness Type (CWE)

Allocation of Resources Without Limits or Throttling

CWE-770

Top Fix

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Upgrade Version

Upgrade to version github.com/hashicorp/consul - v1.22.0;https://github.com/hashicorp/consul.git - v1.22.0

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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