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GHSA-33xw-x3pr-rvqj

Wikimedia Potential DOS due to slow WatchedItemStore::countVisitingWatchersMultiple

Source: GitHub Advisory Database (reviewed) High CVE-2019-12473

Packages

EcosystemPackageAffectedFixed in
Packagist mediawiki/core >= 1.27.0, < 1.27.6 1.27.6
Packagist mediawiki/core >= 1.30.0, < 1.30.2 1.30.2
Packagist mediawiki/core >= 1.31.0, < 1.31.2 1.31.2
Packagist mediawiki/core >= 1.32.0, < 1.32.2 1.32.2

Details

As written in the advisory (Markdown source, shown as plain text).

Wikimedia MediaWiki 1.27.0 through 1.32.1 might allow DoS. Passing invalid titles to the API could cause a DoS by querying the entire watchlist table. Fixed in 1.32.2, 1.31.2, 1.30.2 and 1.27.6.

References

External links from the advisory. They lead to third-party sites.