CVE-2026-39937
High
Description
Improper removal of sensitive information before storage or transfer vulnerability in The Wikimedia Foundation Mediawiki - CentralAuth Extension allows Resource Leak Exposure. The issue has been remediated on the `master` branch, and in the release branches for MediaWiki versions 1.43, 1.44, and 1.45.
SeverityHigh
CVSS8.8
Exploit probability—
ProductMediawiki - CentralAuth Extension
PublishedApr 7, 2026
First seenApr 7, 2026
Weakness typeCWE-212CWE-212
How to fix
Update
- The Wikimedia Foundation Mediawiki - CentralAuth Extension1.43 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| The Wikimedia Foundation Mediawiki - CentralAuth Extension | v < 1.43 | 1.43 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.