Missing Authorization Affecting mediawiki package, versions <1:1.35.2-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
1.21% (65th percentile)

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  • Snyk IDSNYK-ECHOLATEST-MEDIAWIKI-20414308
  • published3 Oct 2026
  • disclosed9 Apr 2021

Introduced: 9 Apr 2021

CVE-2021-30155  (opens in a new tab)
CWE-862  (opens in a new tab)

How to fix?

Upgrade Echo:latest mediawiki to version 1:1.35.2-1 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 1.31.12 and 1.32.x through 1.35.x before 1.35.2. ContentModelChange does not check if a user has correct permissions to create and set the content model of a nonexistent page.

CVSS Base Scores

version 3.1