Bug 2559373 (CVE-2026-115365)

Summary: CVE-2026-115365 github.com/openbao/openbao: OpenBao: Privilege escalation via ACL policy cache namespace traversal
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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 OpenBao. An authenticated attacker can bypass authorization boundaries by assigning specially crafted policy names to tokens, allowing the tokens to reference cached Access Control List (ACL) policies from other namespaces. This can allow the attacker to gain unauthorized privileges within other namespaces, including the root namespace, resulting in privilege escalation.
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Description OSIDB Bzimport 2026-10-22 20:54:57 UTC
OpenBao from 2.3.0 before 2.6.3 contains an incorrect authorization vulnerability in its ACL policy cache that allows tokens to reference policies from arbitrary namespaces using specially crafted policy names. Attackers holding such tokens can gain capabilities of cached policies in other namespaces, including the root namespace, to act across namespace boundaries.