6.5
Medium
CVE-2026-87106 Consul and Consul Enterprise are vulnerable to a denial of service in the native RPC listener that may allow an…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Consul 1.21 | 1.21.0 → < 2.0.4 | 2.0.4 |
| Consul Enterprise 1.21 | 1.21.0 → < 2.0.4 | 2.0.4 |
Other CVEs of Consul
The 27 CVEs of Consul →
CVE-2026-115804
HashiCorp Consul and Consul Enterprise are vulnerable to an authorization bypass in health check registration that may…
6.4
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CVE-2026-105626
HashiCorp Consul and Consul Enterprise are vulnerable to a denial of service in the HTTP API that may allow an…
7.5
High
CVE-2026-105608
HashiCorp Consul and Consul Enterprise are vulnerable to an authorization bypass in service mesh proxy registration
8.8
High
CVE-2026-105765
HashiCorp Consul and Consul Enterprise 1.17.0 up to 2.0.4 are vulnerable to an authorization bypass in the agent's…
7.5
High