Critical severity9.8NVD Advisory· Published Jun 30, 2023· Updated Jun 17, 2026

CVE-2023-37303

Description

An issue was discovered in the CheckUser extension for MediaWiki through 1.39.3. In certain situations, an attempt to block a user fails after a temporary browser hang and a DBQueryDisconnectedError error message.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

MediaWiki/Checkuserllm-fuzzy
Range: <=1.39.3
MediaWiki/CheckUser extensiondescription
MediaWiki/Mediawiki
cpe:2.3:a:mediawiki:mediawiki:*:*:*:*:*:*:*:*
Range: <=1.39.3
osv-coords
pkg:bitnami/mediawiki
Range: < 1.39.4

Patches

Vulnerability mechanics

References

phabricator.wikimedia.org/T338276nvdExploitIssue TrackingPatchVendor Advisory
gerrit.wikimedia.org/r/q/I10a9273c542576b3f7bb38de68dcd2aa41cfb1b0nvdVendor Advisory

News mentions

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epss	0.001
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