Memos versions 0.26.0 through 0.30.0 fail to revoke refresh tokens when a user changes their password, allowing attackers to maintain account access. An attacker with a stolen refresh token can call the RefreshToken RPC to obtain new access tokens and rotate the refresh token indefinitely, bypassing the password change security measure.
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 4
https://github.com/usememos/memos
disclosure@vulncheck.com
https://github.com/usememos/memos/blob/v0.30.0/server/auth/authenticator.go
disclosure@vulncheck.com
https://github.com/usememos/memos/blob/v0.30.0/server/router/api/v1/user_servic…
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/memos-0.26.0-through-0.30.0-insufficient-s…
disclosure@vulncheck.com