CVE-2011-1578

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2011-04-27 · updated 2026-06-16
Weakness: CWE-79

Description

Cross-site scripting (XSS) vulnerability in MediaWiki before 1.16.3, 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 .html 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.

Affected products

Wikimedia Foundation MediaWiki: through 1.16.2; 1.1.0, 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.2.4 (+128)

References

http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058588.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058910.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-April/059232.html
http://lists.fedoraproject.org/pipermail/package-announce/2011-April/059235.html
http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-April/000096.html
http://openwall.com/lists/oss-security/2011/04/13/15
http://secunia.com/advisories/44142
http://www.debian.org/security/2011/dsa-2366
http://www.securityfocus.com/bid/47354
http://www.vupen.com/english/advisories/2011/0978
http://www.vupen.com/english/advisories/2011/1100
http://www.vupen.com/english/advisories/2011/1151

Get alerted when CVE-2011-1578 or the next vulnerability affects your stack