CVE-2011-1587

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-04-27 · updated 2026-06-16
Weakness: CWE-79

Description

Cross-site scripting (XSS) vulnerability in MediaWiki before 1.16.4, 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 located before a ? (question mark) in a 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.

Affected products

Wikimedia Foundation MediaWiki: through 1.16.3; 1.1.0, 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.2.4 (+129)

References

http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-April/000097.html
http://openwall.com/lists/oss-security/2011/04/18/5
http://www.debian.org/security/2011/dsa-2366
https://bugzilla.redhat.com/show_bug.cgi?id=696360
http://lists.wikimedia.org/pipermail/mediawiki-announce/2011-April/000097.html
http://openwall.com/lists/oss-security/2011/04/18/5
http://www.debian.org/security/2011/dsa-2366
https://bugzilla.redhat.com/show_bug.cgi?id=696360

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