Cross-site Scripting (XSS) Affecting mediawiki package, versions <1:1.35.0-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
1.1% (62nd percentile)

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  • Snyk IDSNYK-ECHOLATEST-MEDIAWIKI-20414293
  • published3 Oct 2026
  • disclosed27 Sept 2020

Introduced: 27 Sep 2020

CVE-2020-25815  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Echo:latest mediawiki to version 1:1.35.0-1 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.

An issue was discovered in MediaWiki 1.32.x through 1.34.x before 1.34.4. LogEventList::getFiltersDesc is insecurely using message text to build options names for an HTML multi-select field. The relevant code should use escaped() instead of text().

CVSS Base Scores

version 3.1