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CVE-2026-27802

HIGH CVSS 3.1: 8.3 EPSS 0.05%
Updated Mar 05, 2026
Vaultwarden
Parameter Value
CVSS 8.3 (HIGH)
Fixed In 1.35.4
Type CWE-863 (Incorrect Authorization), CWE-269 (Improper Privilege Management)
Vendor Vaultwarden
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
Low
Partial disruption

CVSS Vector v3.1