CVE-2026-87106

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.

• CWE-400

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

Published

Sep 10, 2026

Last Modified

Sep 10, 2026

Status

Awaiting Analysis

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-87099Cross-site scripting (XSS) vulnerability due to improper inp…5.7
• CVE-2026-87100Protection mechanism failure due to missing binary hardening…3.6
• CVE-2026-87101Sensitive information disclosure due to improper token valid…6.2
• CVE-2026-87102Sensitive information disclosure and manipulation due to imp…7.4
• CVE-2026-87103Sensitive information disclosure and manipulation due to imp…7.4
• CVE-2026-87105Tanium addressed a SQL injection vulnerability in Threat Res…8.8
• CVE-2026-87107Consul and Consul Enterprise are vulnerable to an authorizat…5.4
• CVE-2026-87108An authenticated Ops Manager user with a read-only project r…4.3
• CVE-2026-87109An authenticated Ops Manager organization member can retriev…6.5
• CVE-2026-8711NGINX JavaScript has a vulnerability when the js_fetch_proxy…9.8
• CVE-2026-87110An unauthenticated user with network access to the Ops Manag…5.3
• CVE-2026-87111The User Registration PRO – Custom Registration Form, Login …7.2