Information Exposure Affecting mediawiki package, versions <1:1.35.5-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
1.4% (72nd percentile)

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  • Snyk IDSNYK-ECHOLATEST-MEDIAWIKI-20414324
  • published3 Oct 2026
  • disclosed17 Dec 2021

Introduced: 17 Dec 2021

CVE-2021-45038  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Echo:latest mediawiki to version 1:1.35.5-1 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 before 1.35.5, 1.36.x before 1.36.3, and 1.37.x before 1.37.1. By using an action=rollback query, attackers can view private wiki contents.

CVSS Base Scores

version 3.1