Bug 2513564 (CVE-2026-12624)

Summary: CVE-2026-12624 Vault: Vault: Information disclosure via ACL policy bypass
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Vault's Access Control List (ACL) policy engine. The engine did not consistently enforce wildcard deny rules against LIST requests with a trailing slash. This vulnerability could allow an authenticated attacker with specific permissions to enumerate the names of entries they were intended to be denied access to, leading to information disclosure.
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Description OSIDB Bzimport 2026-08-10 17:11:30 UTC
Vault’s ACL policy engine did not consistently enforce a wildcard (glob) deny rule against LIST requests made with a trailing slash on the denied path. This may allow a token holding a broader allow rule alongside a narrower wildcard deny rule to enumerate the names of entries beneath a path it was intended to be denied access to. This vulnerability (CVE-2026-12624) is fixed in Vault Community Edition 2.0.3 and Vault Enterprise 2.0.3, 1.21.8, 1.20.13, and 1.19.19.