CVE-2012-4377

medium
Published 2017-10-26 · Modified 2026-05-13
CVSS v3
6.1
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v2
4.3
VIR risk
6.1

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.

Predictions

Exploit likelihood
71%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2012-4377

vendor Authored 2026-05-27

Vendor advisory: secalert@redhat.com — https://phabricator.wikimedia.org/T41700

vendor Authored 2026-05-27

Vendor advisory: secalert@redhat.com — https://lists.wikimedia.org/pipermail/mediawiki-announce/2012-August/000119.html

vendor Authored 2026-05-27

Vendor advisory: secalert@redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=853409

vendor Authored 2026-05-27

Vendor advisory: secalert@redhat.com — http://www.openwall.com/lists/oss-security/2012/08/31/6

vendor Authored 2026-05-27

Vendor advisory: secalert@redhat.com — http://www.openwall.com/lists/oss-security/2012/08/31/10

OS impact

OSVersionStatusFixed in
debian debianbookwormfixed1:1.19.2-1
debian debianbullseyefixed1:1.19.2-1
debian debianforkyfixed1:1.19.2-1
debian debiansidfixed1:1.19.2-1
debian debiantrixiefixed1:1.19.2-1

Application impact

VendorProductVersionsFixed
mediawikimediawiki{"endIncluding":"1.18.4"}
mediawikimediawiki1.19.0
mediawikimediawiki1.19.1

References

CWEs

CWE-79

Verify integrity in audit chain (admin only). AS-IS.