CVE-2026-43911
HIGH
MEDIUM
Priority: 0.02
BB Relevance:
66/100
Published: 2026-05-11
Modified: 2026-10-26
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Interaction
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
None
S:
Unchanged
C:
High
I:
High
A:
None
Description
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.
Weakness Classification (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| dani-garcia | vaultwarden | < 1.35.5 |
References & Advisories (1)
Exploit
Mitigation
Vendor Advisory