CVE-2013-4304 json
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…
published 12y ago modified 4mo ago also EUVD-2013-4198
- cvss
- 7.5
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.1%
- EPSS 2.1% chance of exploitation in 30 days, percentile 81%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Is CVE-2013-4304 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerExploit prediction
2.08% chance of exploitation in the next 30 days, higher than 81% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- bugzilla.wikimedia.org https://bugzilla.wikimedia.org/show_bug.cgi?id=52338 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
Classification
- Weakness
-
- CWE-287 Improper Authentication
References
-
lists.wikimedia.org
/pipermail/mediawiki-announce/2013-September/000133.html
mailing-list, patch
-
bugzilla.wikimedia.org
/show_bug.cgi?id=52338
exploit
-
seclists.org
/oss-sec/2013/q3/553
mailing-list
-
exchange.xforce.ibmcloud.com
/vulnerabilities/86894
vdb-entry
-
osvdb.org
/96910
vdb-entry
-
secunia.com
/advisories/54723
third-party-advisory
Sources
- CVE List CVE-2013-4304
- NVD CVE-2013-4304
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.