CVE-2026-43911 — Vaultwarden: Refresh tokens not invalidated on security stamp rotation
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-sens…
Published: 2026-05-11 · CVSS: 6.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7