Bug 2538923 (CVE-2026-95814)

Summary: CVE-2026-95814 vaultwarden: Vaultwarden: Authorization bypass allows unauthorized access to organization ciphers
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Vaultwarden. This vulnerability allows revoked and not-yet-confirmed organization members to bypass authorization checks. By exploiting missing status filters in specific access-restriction queries, these unauthorized members can retain read, write, delete, and attachment access to sensitive organization ciphers, leading to unauthorized information disclosure and modification.
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Bug Depends On: 2539343, 2539344    
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Description OSIDB Bzimport 2026-09-22 21:32:12 UTC 
Vaultwarden through 1.37.3 omits organization membership status validation from three cipher access-restriction queries, allowing revoked and not-yet-confirmed members to retain read, write, delete, and attachment access to organization ciphers. Attackers with revoked or pending membership can exploit missing status filters in get_user_collections_access_flags, get_group_collections_access_flags, and is_in_full_access_group to access protected cipher data server-side.