Description
Consul and Consul Enterprise are vulnerable to an authorization bypass in the catalog node-write path that may allow an authenticated attacker to delete another node's catalog registration and take over its node identity. An attacker with a token granting node-write permission on any single node name may exploit this issue if they can obtain the node ID of a node they do not control. This vulnerability (CVE-2026-87090) 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: 8.3 High
EPSS: n/a
KEV: No
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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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 an authorization bypass in the catalog node-write path that may allow an authenticated attacker to delete another node's catalog registration and take over its node identity. An attacker with a token granting node-write permission on any single node name may exploit this issue if they can obtain the node ID of a node they do not control. This vulnerability (CVE-2026-87090) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4.
Title Consul vulnerable to an authorization bypass in the catalog node-write path
Weaknesses CWE-863
References
Metrics cvssV3_1

{'score': 8.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: HashiCorp

Published:

Updated: 2026-09-10T19:02:58.403Z

Reserved: 2026-09-08T19:58:12.912Z

Link: CVE-2026-87090

cve-icon Vulnrichment

Updated: 2026-09-10T19:02:53.867Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-10T19:17:37.157

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

Link: CVE-2026-87090

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses