CVE-2026-39937

8.8 highEPSS 0.3%

High (8.8). EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

8.8 high

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:L/SI:L/SA:L

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 18% of CVEs (scores of 2026-10-31)
CWE: CWE-212
Published: 2026-04-07
Modified: 2026-07-21
Record from: the NVD, synced 2026-10-19

References

https://gerrit.wikimedia.org/r/q/I0b72427fa329aee85841a2cb23dec3058edce85e
https://phabricator.wikimedia.org/T418122

Check your stack JSON