Improper Authorization in Vault Enterprise and Vault - CVE-2026-12624
Published: August 11, 2026
Vulnerability identifier: #VU141396
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-12624
CWE-ID: CWE-285
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to improper access control in the Vault ACL policy engine when handling LIST requests with a trailing slash on a denied path. A remote user can send a crafted LIST request to disclose sensitive information.
The issue is limited to enumeration of entry names beneath a denied path and does not disclose secret values. Exploitation requires a token that has both a broad allow rule on a parent path and a narrower wildcard deny rule on a subpath.
Affected software
Vault Enterprise
Vault
Vault
How to mitigate CVE-2026-12624
Install security update from vendor's website.
Vault Enterprise - addressed in versions 1.19.19, 1.20.13, 1.21.8, 2.0.3
Vault - update to 2.0.3
Vault - update to 2.0.3