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HIGH7.5

GHSA-33xw-x3pr-rvqj

Wikimedia Potential DOS due to slow WatchedItemStore::countVisitingWatchersMultiple

Quick fix

GHSA-33xw-x3pr-rvqj — mediawiki/core: upgrade to the fixed version with the command below.

composer require mediawiki/core:^1.27.6

Details

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.

Are you affected?

Enter the version of the package you're using.

Affected packages

Packagist/mediawiki/core
Introduced in: 1.27.0Fixed in: 1.27.6
Fixcomposer require mediawiki/core:^1.27.6
Packagist/mediawiki/core
Introduced in: 1.30.0Fixed in: 1.30.2
Fixcomposer require mediawiki/core:^1.30.2
Packagist/mediawiki/core
Introduced in: 1.31.0Fixed in: 1.31.2
Fixcomposer require mediawiki/core:^1.31.2
Packagist/mediawiki/core
Introduced in: 1.32.0Fixed in: 1.32.2
Fixcomposer require mediawiki/core:^1.32.2

References