An issue was discovered in the ProofreadPage (aka Proofread Page) extension for MediaWiki through 1.39.3. In includes/Page/PageContentHandler.php and includes/Page/PageDisplayHandler.php, hidden users can be exposed via public interfaces.
{ "binaries": [ { "binary_name": "mediawiki", "binary_version": "1:1.27.4-3" }, { "binary_name": "mediawiki-classes", "binary_version": "1:1.27.4-3" } ] }
{ "binaries": [ { "binary_name": "mediawiki", "binary_version": "1:1.31.7-1" }, { "binary_name": "mediawiki-classes", "binary_version": "1:1.31.7-1" } ] }
{ "binaries": [ { "binary_name": "mediawiki", "binary_version": "1:1.35.6-1" }, { "binary_name": "mediawiki-classes", "binary_version": "1:1.35.6-1" } ] }
{ "binaries": [ { "binary_name": "mediawiki", "binary_version": "1:1.39.7-1" }, { "binary_name": "mediawiki-classes", "binary_version": "1:1.39.7-1" } ] }
{ "binaries": [ { "binary_name": "mediawiki", "binary_version": "1:1.43.1+dfsg-1" }, { "binary_name": "mediawiki-classes", "binary_version": "1:1.43.1+dfsg-1" } ] }