The Passster WordPress plugin before 3.5.5.5.2 stores the password inside a cookie named "passster" using base64 encoding method which is easy to decode.
CVSS 3.1MEDIUM 5.9·Network·No auth·No interaction·EPSS 0.00586·Published 2022-10-17·Fixed in 3.5.5.5.2CWE-319