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CVE-2013-4306

18
FAUCET Score

CVE-2013-4306 describes a Cross-Site Request Forgery (CSRF) vulnerability in the CheckUser extension for MediaWiki, specifically within api/ApiQueryCheckUser.php. This flaw allows remote attackers to hijack the authentication of arbitrary users, enabling them to perform sensitive write actions. The vulnerability has a CVSS score of 6.8, indicating a medium severity, with a network attack vector, medium access complexity, and potential for partial compromise of confidentiality, integrity, and availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 1.19.0, < 1.19.8CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
>= 1.20.0, < 1.20.7CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
>= 1.21.0, < 1.21.2CPE matchmatch criteria
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

6.8MEDIUM

AV:N/AC:M/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.90%
Probability of exploitation in next 30 days
EPSS Percentile
55.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0090 is in the 13th percentile among its peer group of 19,958 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

lists.wikimedia.org / pipermail/mediawiki-announce/2013-September/000133.html
Patch
osvdb.org / 96908
Broken Link
bugzilla.wikimedia.org / show_bug.cgi
Issue TrackingPatch
seclists.org / oss-sec/2013/q3/553
Mailing ListThird Party Advisory
exchange.xforce.ibmcloud.com / vulnerabilities/86893
VDB Entry
git.wikimedia.org / commit/mediawiki%2Fextensions%2FCheckUser.git/99ad25d066ce6111e798427cba7f21526827f651
Patch
securityfocus.com / bid/62210
Third Party AdvisoryVDB Entry