CVE-2012-4377

6.1 mediumEPSS 1.6%

Cross-site scripting (XSS) vulnerability in MediaWiki before 1.18.5 and 1.19.x before 1.19.2 allows remote attackers to inject arbitrary web script or HTML via a File: link to a nonexistent image.

Severity

CVSS 3.0

6.1 medium

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

EPSS: 1.6% chance of exploitation in the next 30 days; higher than 75% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2017-10-26
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=853409
https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-August/000119.html

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