CVE-2026-87090
Consul vulnerable to an authorization bypass in the catalog node-write path
CVSS Score
8.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-863 |
| Vendor | hashicorp |
| Product | consul |
| Published | Sep 10, 2026 |
| Last Updated | Sep 10, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
HashiCorp / Consul
0.1.0 < 2.0.4
HashiCorp / Consul Enterprise
0.1.0 < 2.0.4
References
Credits
This issue was reported to HashiCorp by Raphael Zanarelli.