Unknown · Vaultwarden · CVE-2026-43911
**Name of the Vulnerable Software and Affected Versions**
Vaultwarden versions prior to 1.35.5
**Description**
Refresh tokens are not invalidated when a user's `security stamp` is rotated during security-sensitive operations, such as password changes, KDF changes, key rotation, email changes, organization administrator password resets, or emergency access takeovers. This allows an attacker with a previously obtained refresh token to maintain session access even after the user has performed actions to secure their account.
**Recommendations**
Update to version 1.35.5.