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MediaWiki: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (CVE-2020-25814)

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MediaWiki: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (CVE-2020-25814)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
09/27/2020
Created
10/08/2020
Added
10/07/2020
Modified
11/08/2023

Description

In MediaWiki before 1.31.10 and 1.32.x through 1.34.x before 1.34.4, XSS related to jQuery can occur. The attacker creates a message with [javascript:payload xss] and turns it into a jQuery object with mw.message().parse(). The expected result is that the jQuery object does not contain an <a> tag (or it does not have a href attribute, or it's empty, etc.). The actual result is that the object contains an <a href ="javascript... that executes when clicked.

Solution(s)

  • mediawiki-upgrade-1_31_10
  • mediawiki-upgrade-1_34_4

References

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