CVE-2026-43911
Medium · 6.8CVSS
6.8
EPSS
0.3%
Published
May 11, 2026
CISA due date
—
The record
Vaultwarden is a Bitwarden-compatible server written in Rust. Prior to 1.35.5, refresh tokens are not invalidated when the user's security_stamp is rotated by some security-sensitive operations (password change, KDF change, key rotation, email change, org admin password reset, emergency access takeover). This allows an attacker holding a previously obtained refresh token to maintain session access even after the user has taken action to secure their account. This vulnerability is fixed in 1.35.5.
Affected packages
| Ecosystem | Package | Introduced | Fixed |
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