CVE-2012-4377

Description

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.

Category

6.1
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.90% Top 30%
Vendor Advisory wikimedia.org Vendor Advisory wikimedia.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=853409 issue tracking patch
http://www.openwall.com/lists/oss-security/2012/08/31/6 mailing list third party advisory patch
https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-August/000119.html mailing list patch vendor advisory
https://phabricator.wikimedia.org/T41700 mailing list vendor advisory
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=686330 issue tracking third party advisory
http://www.openwall.com/lists/oss-security/2012/08/31/10 mailing list third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2012-4377?
CVE-2012-4377 has been scored as a medium severity vulnerability.
How to fix CVE-2012-4377?
To fix CVE-2012-4377, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2012-4377 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2012-4377 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.