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CVE-2019-12473: Wikimedia Potential DOS due to slow WatchedItemStore::countVisitingWatchersMultiple

high Affects mediawiki/core. Feed 2026.10.29.2, updated 2026-10-29; published ; advisory modified .

Wikimedia Potential DOS due to slow WatchedItemStore::countVisitingWatchersMultiple

Package
mediawiki/core Composer
Affected versions
>=1.27.0 and <1.27.6 or >=1.30.0 and <1.30.2 or >=1.31.0 and <1.31.2 or >=1.32.0 and <1.32.2
Fixed in
1.27.6, 1.30.2, 1.31.2, 1.32.2
Severity
high  CVSS 7.5
Exploitation
not on CISA KEV · EPSS 2% (83.3th percentile)
Published
2022-05-24
Source
osv.dev

References

CWE-400
NVD recordmediawiki/core advisories

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# PHP projects (recommended)
composer require --dev phpwarden/phpwarden
# then
vendor/bin/phpwarden deps composer.lock

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pipx install phpwarden   &&   phpwarden deps composer.lock

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