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.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://discuss.hashicorp.com/t/hcsec-2025-29-consuls-kv-endpoint-is-vulnerable-to-denial-of-service/76724 Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.5 · hashicorpNVD modified 2026-10-18 21:10
Affected (CPE criteria) 2
cpe:2.3:a:hashicorp:consul:*:*:*:*:enterprise:*:*:*cpe:2.3:a:hashicorp:consul:*:*:*:*:-:*:*:*