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.
Published: 2026-09-10
Score: 6.5 Medium
EPSS: n/a
KEV: No
AI Analysis

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Remediation

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History

Thu, 10 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 10 Sep 2026 19:00:00 +0000

Type Values Removed Values Added
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.
Title Consul vulnerable to a denial of service in the native RPC listener
Weaknesses CWE-400
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}


Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: HashiCorp

Published:

Updated: 2026-09-10T19:02:24.164Z

Reserved: 2026-09-08T20:19:26.410Z

Link: CVE-2026-87106

cve-icon Vulnrichment

Updated: 2026-09-10T19:02:19.884Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-10T19:17:37.293

Modified: 2026-09-10T19:45:14.210

Link: CVE-2026-87106

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses