[MediaWiki-l] MediaWiki Extensions and Skins Security Release Supplement (1.31.9/1.34.3/1.35.0)

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[MediaWiki-l] MediaWiki Extensions and Skins Security Release Supplement (1.31.9/1.34.3/1.35.0)

Scott Bassett

With the security/maintenance release of MediaWiki 1.31.9/1.34.3/1.35.0 [0], we would also like to provide this supplementary announcement of MediaWiki extensions and skins with now-public Phabricator tasks, security patches and backports [1]:

== MobileFrontend ==
+ (T238075) - Alert group Cookie(s) without HttpOnly flag are set due to default configuration
< https://gerrit.wikimedia.org/r/q/I8e84f1cbc8878974532b511cebd9de40c5de55c6 >

== MobileFrontend ==
+ (T262213, CVE-2020-26120) - XSS on Pages viewed within MobileFrontend extension
< https://gerrit.wikimedia.org/r/q/I42e079bc875d17b336ab015f3678eaedc26e10ea >

== CentralAuth ==
+ (T260485, CVE-2020-25869) - CentralAuth uses wrong actor ID when locally suppressing the user
< https://gerrit.wikimedia.org/r/q/Iaa886a1824e5a74f4501ca7e28917c780222aac0 >
< https://gerrit.wikimedia.org/r/q/I2336954c665366a99f9995df9b08071d4de6db79 >

== FileImporter ==
+ (T262628, CVE-2020-26121) - FileImporter imports the file even when the target page is protected on Commons
< https://gerrit.wikimedia.org/r/q/Ib852a96afc4dca10516d0510e69c10f9892b351b >

The Wikimedia Security Team recommends updating these extensions and/or skins to the current master branch or relevant, supported release branch [2] as soon as possible. Some of the referenced Phabricator tasks above _may_ still be private. Unfortunately, when security issues are reported, sometimes sensitive information is exposed and since Phabricator is historical, we cannot make these tasks public without exposing this sensitive information. If you have any additional questions or concerns regarding this update, please feel free to contact [hidden email] or file a security task within Phabricator [3].

[0] https://lists.wikimedia.org/pipermail/mediawiki-announce/2020-September/000260.html
[1] https://phabricator.wikimedia.org/T256342
[2] https://www.mediawiki.org/wiki/Version_lifecycle
[3] https://www.mediawiki.org/wiki/Reporting_security_bugs

Scott Bassett

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