description: MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2, when a private wiki is configured, provides different error messages for failed login attempts depending on whether the username exists, which allows remote attackers to enumerate account names and conduct brute-force attacks via a series of requests.
problem types: information leak because of response discrepancy
affected:
{
product: MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2
vendor: n/a
versions:
status: affected, version: MediaWiki before 1.27.4, 1.28.x before 1.28.3, and 1.29.x before 1.29.2
}