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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 6.5
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CWE
- CWE-400
- Published
- 2026-09-10
- Last modified
- 2026-09-10
Affected products
- HashiCorp Consul
- HashiCorp Consul Enterprise
Weakness type
Related vulnerabilities
- CVE-2026-9338 — IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities
- CVE-2026-88290 — GV-LPC2011/LPC2211 - Unauthenticated VLSVR Slowloris and Memory Resource Exhaustion
- CVE-2026-88286 — GV-LPC2011/LPC2211 - PTZ Connection-State Accept-Loop Denial of Service
- CVE-2026-22591 — Fast DDS DDSSQLFilter Recursive Parser Stack Exhaustion (Remote DoS)
- CVE-2026-86204 — PocketMine-MP before 5.39.2 Denial of Service via ModalFormResponsePacket
- CVE-2026-86201 — PocketMine-MP before 5.41.1 LogDoS via LoginPacket clientData
- CVE-2025-71418 — PocketMine-MP before 5.25.2 Denial of Service via explode
- CVE-2026-53937 — MCP Kotlin SDK's unbounded line buffer in StdioServerTransport/StdioClientTransport leads to memory exhaustion (DoS)