CVE-2013-4304

no score yetEPSS 2.1%

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.

EPSS: 2.1% chance of exploitation in the next 30 days; higher than 81% of CVEs (scores of 2026-10-31)
CWE: CWE-287
Published: 2014-01-26
Modified: 2026-06-16
Record from: the NVD, synced 2026-10-19

Affected

brion_vibber:centralauth_extension
mediawiki:mediawiki

References

http://lists.wikimedia.org/pipermail/mediawiki-announce/2013-September/000133.html
http://osvdb.org/96910
http://seclists.org/oss-sec/2013/q3/553
http://secunia.com/advisories/54723
https://bugzilla.wikimedia.org/show_bug.cgi?id=52338

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