CVE-2026-87107 Consul vulnerable to an authorization bypass in the catalog deregistration path
Local ACL tokens can bypass authorization to delete peer-imported catalog objects in Consul, requiring an upgrade to patched versions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-87107?
CVE-2026-87107 is a medium-severity authentication bypass vulnerability in HashiCorp Consul, published on 10 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-863
Which versions are affected by CVE-2026-87107?
1 open source package ship an affected version, including consul.
| Package | Affected | Fixed in |
|---|---|---|
consul Bitnami | From 1.21.0 | 2.0.4 |
How do I fix CVE-2026-87107?
Upgrade consul to 2.0.4 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-87107 being exploited?
There is no known exploitation of CVE-2026-87107 in the wild and no public exploit code.
Sources
Also known as BIT-consul-2026-87107, GHSA-h73p-f2fq-8x97, MINI-4jj6-2f3h-qxrq, MINI-q8cg-jrv7-vfm2, UBUNTU-CVE-2026-87107.