| Package | Affected versions | Patched versions |
|---|---|---|
| mediawiki | = 1.19= 1.19.0= 1.19.1= 1.19.2= 1.19.3= 1.19.4= 1.19.5= 1.19.6= 1.19.7= 1.20= 1.20.1= 1.20.2= 1.20.3= 1.20.4= 1.20.5= 1.20.6= 1.21= 1.21.1 |
The CentralAuth extension for MediaWiki 1.19.x before 1.19.8, 1.20.x before 1.20.7, and 1.21.x before 1.21.2 caches a valid CentralAuthUser object in the centralauth_User cookie even when a user has not successfully logged in, which allows remote attackers to bypass authentication without a password.
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