Incorrect Default Permissions Affecting mediawiki package, versions <1:1.15.5-4


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
2.23% (82nd percentile)

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  • Snyk IDSNYK-ECHOLATEST-MEDIAWIKI-20414170
  • published3 Oct 2026
  • disclosed8 Jan 2012

Introduced: 8 Jan 2012

CVE-2011-4361  (opens in a new tab)
CWE-276  (opens in a new tab)

How to fix?

Upgrade Echo:latest mediawiki to version 1:1.15.5-4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mediawiki package and not the mediawiki package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

MediaWiki before 1.17.1 does not check for read permission before handling action=ajax requests, which allows remote attackers to obtain sensitive information by (1) leveraging the SpecialUpload::ajaxGetExistsWarning function, or by (2) leveraging an extension, as demonstrated by the CategoryTree, ExtTab, and InlineEditor extensions.

CVSS Base Scores

version 3.1