CVE-2022-29547

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-04-21 · updated 2026-06-17
Weakness: CWE-276

Description

The CreateRedirect extension before 2022-04-14 for MediaWiki does not properly check whether the user has permissions to edit the target page. This could lead to an unauthorised (or blocked) user being able to edit a page.

Affected products

mediawiki Createredirect: before 2022-04-14 — fixed in 2022-04-14

How to fix

Upgrade to a fixed version: mediawiki Createredirect 2022-04-14. Check the vendor advisory for mitigations.

References

https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CreateRedirect/+/780567
https://phabricator.miraheze.org/T9061
https://phabricator.wikimedia.org/T306174
https://gerrit.wikimedia.org/r/c/mediawiki/extensions/CreateRedirect/+/780567
https://phabricator.miraheze.org/T9061
https://phabricator.wikimedia.org/T306174

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