Medium severity6.5NVD Advisory· Published Sep 10, 2026· Updated Sep 10, 2026

CVE-2026-87106

Description

Consul and Consul Enterprise are vulnerable to a denial of service in the native RPC listener that may allow an authenticated client to exhaust server memory before ACL authorization is evaluated. A client that can complete the internal RPC mTLS handshake may exploit this issue without holding a valid ACL token. This vulnerability (CVE-2026-87106) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

Hashicorp/Consulllm-fuzzy
Range: before 2.0.4
Hashicorp/Consul Enterprisellm-fuzzy
Range: before 1.21.18, before 1.22.12, before 2.0.4

Patches

Vulnerability mechanics

References

discuss.hashicorp.com/t/hcsec-2026-35-consul-vulnerable-to-a-denial-of-service-in-the-native-rpc-listener/77737nvd

News mentions

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