CVE-2026-43911
MEDIUMVaultwarden: Refresh tokens not invalidated on security stamp rotation
Title source: cnaDescription
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.
References (1)
Core 1
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/dani-garcia/vaultwarden/security/advisories/GHSA-6j4w-g4jh-xjfx
Scores
CVSS v3
6.8
EPSS
0.0022
EPSS Percentile
11.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-613
Status
published
Products (1)
dani-garcia/vaultwarden
< 1.35.5 (2 CPE variants)
Published
May 11, 2026
Tracked Since
May 12, 2026