CVE-2026-87107 — Consul vulnerable to an authorization bypass in the catalog deregistration path

Description (CNA)

Consul and Consul Enterprise are vulnerable to an authorization bypass in the catalog deregistration path that may allow a local ACL token to delete peer-imported catalog objects. A caller with {{service:write}} or {{node:write}} permission may exploit this issue to remove services, checks, or nodes imported from a peered cluster without holding authority over the peer origin. This vulnerability (CVE-2026-87107) is fixed in Consul 2.0.4 and Consul Enterprise 1.21.18, 1.22.12 and 2.0.4.

Affected (CNA)

Vendor / product	Versions
HashiCorp / Consul	affected 1.21.0 before 2.0.4
HashiCorp / Consul Enterprise	affected 1.21.0 before 2.0.4

CWE

CWE-863

References

https://discuss.hashicorp.com/t/hcsec-2026-36-consul-vulnerable-to-an-authorization-bypass-in-the-catalog-deregistration-path/77738

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.