CVE-2011-1765

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.1% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2011-05-23 · updated 2026-06-16
Weakness: CWE-79

Description

Cross-site scripting (XSS) vulnerability in MediaWiki before 1.16.5, when Internet Explorer 6 or earlier is used, allows remote attackers to inject arbitrary web script or HTML via an uploaded file accessed with a dangerous extension such as .shtml at the end of the query string, in conjunction with a modified URI path that has a %2E sequence in place of the . (dot) character. NOTE: this vulnerability exists because of an incomplete fix for CVE-2011-1578 and CVE-2011-1587.

Affected products

Wikimedia Foundation MediaWiki: through 1.16.4; 1.1.0, 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.2.4 (+130)

References

http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060435.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060496.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060507.html
http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-May/000098.html
http://secunia.com/advisories/44684
http://www.securityfocus.com/bid/47722
https://bugzilla.redhat.com/show_bug.cgi?id=702512
https://bugzilla.wikimedia.org/show_bug.cgi?id=28534
http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060435.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060496.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-May/060507.html
http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-May/000098.html

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