Improper access control in OpenBao - #VU152261
Published: September 25, 2026
Vulnerability identifier: #VU152261
CSH Severity: Low
CVSS v4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to cause a denial of service.
The vulnerability exists due to improper access control in the Agent and Proxy quit endpoints when handling requests without the required X-Vault-Header. A remote privileged user can send a request without the required header to cause a denial of service.
The issue affects Agent and Proxy services configured with require_request_header = true.
Affected software
OpenBao
Remediation
Install security update from vendor's website.
OpenBao - addressed in versions 2.6.3, 2.7.0