An issue exists in the AbuseFilter extension in MediaWiki up to and including 1.36. If the MediaWiki:Abusefilter-blocker message is invalid within the content language, the filter user falls back to the English version, but that English version could also be invalid on a wiki. This would result in a fatal error, and potentially fail to block or restrict a potentially nefarious user.
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mediawiki mediawiki |
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