Is CVE-2026-87106 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-87106?

CVE-2026-87106 has a CVSS v3 severity of MEDIUM (6.5).

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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.