Description
OpenBao from 2.3.0 before 2.6.3 contains an improper authorization vulnerability that allows privileged child-namespace tokens to modify plugin registrations because /v1/sys/plugins/catalog/* is not restricted to the root namespace. Attackers can remove existing registrations, create invalid ones, or register installed plugins through a child namespace's sys/ mount, causing denial of service.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| openbao | openbao | 2.3.0 – < 2.6.3 | 2.6.3 |
Advisories 1
- WID-SEC-2026-3540 OpenBao: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 22, 2026
References
- GitHub Security Advisory (GHSA-cg72-x35g-xfp8) vendor-advisory
- VulnCheck Advisory: OpenBao 2.3.0 before 2.6.3 Missing Root Namespace Enforcement in Plugin Catalog APIs third-party-advisory