description: The CentralNotice extension for MediaWiki before 1.19.9, 1.20.x before 1.20.8, and 1.21.x before 1.21.3 sets the Cache-Control header to cache session cookies when a user is autocreated, which allows remote attackers to authenticate as the created user.
problem types: Other
affected:
{
product: MediaWiki
vendor: Wikimedia Foundation
versions:
status: affected, version: before 1.19.9
status: affected, version: 1.20.x before 1.20.8
status: affected, version: 1.21.x before 1.21.3
}