CVE-2012-4380

7.5 highEPSS 2.3%

High (7.5) in mediawiki mediawiki. EPSS 2.3% chance of exploitation in the next 30 days.

MediaWiki before 1.18.5, and 1.19.x before 1.19.2 allows remote attackers to bypass GlobalBlocking extension IP address blocking and create an account via unspecified vectors.

Severity

CVSS 3.0

7.5 high

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS: 2.3% chance of exploitation in the next 30 days; higher than 83% of CVEs (scores of 2026-10-31)
CWE: CWE-284
Published: 2017-10-19
Modified: 2026-06-16
Record from: the NVD, synced 2026-10-19

Affected

mediawiki:mediawiki

References

http://www.openwall.com/lists/oss-security/2012/08/31/10
http://www.openwall.com/lists/oss-security/2012/08/31/6
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=686330
https://bugzilla.redhat.com/show_bug.cgi?id=853440
https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-August/000119.html

Check your stack JSON