CVE-2026-87090: Consul and Consul Enterprise are vulnerable to an authorization bypass in the catalog node-write path that may allow an authenticated attacker to delete…

PriorityP352high8.3CVSS 3.1

AVNACLPRLUINSUCLIHAH

EPSS

0.37%

29.9th percentile

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
hashicorp	consul	>= 0.1.0 < 2.0.4	2.0.4
hashicorp	consul_enterprise	>= 0.1.0 < 2.0.4	2.0.4

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