Parse Server before 8.6.99 and 9.0.0 before 9.10.3 evaluates checks against the target account during a user update before authorizing the caller, and reflects their outcome in the response. An unauthorized caller, with or without a session, can confirm guessed usernames or emails and, when passwordPolicy.maxPasswordHistory or doNotAllowUsername is set, guessed current or previous passwords, bypassing account lockout.
{
"cpes": [
"cpe:2.3:a:parseplatform:parse-server:*:*:*:*:*:node.js:*:*"
],
"severity": "Medium"
}