Vaultwarden through 1.37.3 omits organization membership status validation from three cipher access-restriction queries, allowing revoked and not-yet-confirmed members to retain read, write, delete, and attachment access to organization ciphers. Attackers with revoked or pending membership can exploit missing status filters in get_user_collections_access_flags, get_group_collections_access_flags, and is_in_full_access_group to access protected cipher data server-side.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 5
https://github.com/dani-garcia/vaultwarden
disclosure@vulncheck.com
https://github.com/dani-garcia/vaultwarden/blob/1.37.3/src/db/models/cipher.rs
disclosure@vulncheck.com
https://github.com/dani-garcia/vaultwarden/blob/1.37.3/src/db/models/group.rs
disclosure@vulncheck.com
https://github.com/dani-garcia/vaultwarden/pull/7554
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/vaultwarden-through-1.37.3-authorization-b…
disclosure@vulncheck.com