The ScratchSig extension for MediaWiki before version 1.0.1 allows stored Cross-Site Scripting. Using <script> tag inside <scratchsig> tag, attackers with edit permission can execute scripts on visitors' browser. With MediaWiki JavaScript API, this can potentially lead to privilege escalation and/or account takeover. This has been patched in release 1.0.1. This has already been deployed to all Scratch Wikis. No workarounds exist other than disabling the extension completely.
oryginał ENCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:HScratch Wiki Scratchsig
APPScratch-Wiki< 1.0.1
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