Bug 2444676 (CVE-2026-27802)

Summary: CVE-2026-27802 vaultwarden: Vaultwarden: Privilege Escalation via Unauthorized Bulk Permission Update
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. A manager, an authorized user, can exploit this vulnerability by performing a bulk permission update to collections they are not authorized to access. This can lead to privilege escalation, allowing the manager to gain unauthorized access and control over these collections.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Depends On: 2444949, 2444950, 2444951, 2444952, 2444953, 2444954    
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Description OSIDB Bzimport 2026-03-04 22:01:20 UTC
Vaultwarden is an unofficial Bitwarden compatible server written in Rust, formerly known as bitwarden_rs. Prior to version 1.35.4, there is a privilege escalation vulnerability via bulk permission update to unauthorized collections by Manager. This issue has been patched in version 1.35.4.