https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-06T23:07:24.537123+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/euvd-2026-250838 EUVD-2026-250838 2026-10-06T23:07:24.583507+00:00 EUVD-2026-250838 https://cve.radiocsirt.org/vuln/fkie_cve-2025-21612 fkie_cve-2025-21612 2026-10-06T23:07:24.583554+00:00

TabberNeue is a MediaWiki extension that allows the wiki to create tabs. Prior to 2.7.2, TabberTransclude.php doesn't escape the user-supplied page name when outputting, so an XSS payload as the page name can be used here. This vulnerability is fixed in 2.7.2.

 https://cve.radiocsirt.org/vuln/ghsa-4x6x-8rm8-c37j GHSA-4x6x-8rm8-c37j — Extension:TabberNeue vulnerable to Cross-site Scripting 2026-10-06T23:07:24.583588+00:00

Affected: Packagist: starcitizentools/tabber-neue

### Summary There are several sources of arbitrary, unescaped user input being used to construct HTML, which allows any user that can edit pages or otherwise render wikitext to XSS other users.

> Edit: Only the first XSS can be reproduced in production.

### Details

> ✅ Verified and patched in f229cab099c69006e25d4bad3579954e481dc566

https://github.com/StarCitizenTools/mediawiki-extensions-TabberNeue/blob/2526daa9f8cfdd616c861c8439755cb74a6c8c6e/includes/TabberTransclude.php#L154 This doesn't escape the user-supplied page name when outputting, so an XSS payload as the page name can be used here.

This was caused by d8c3db4e5935476e496d979fb01f775d3d3282e6.

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> ❌ Invalid as MediaWiki parser sanitizes dangerous HTML

https://github.com/StarCitizenTools/mediawiki-extensions-TabberNeue/blob/2526daa9f8cfdd616c861c8439755cb74a6c8c6e/includes/Tabber.php#L160 The documentation for [`Parser::recursiveTagParse()`](https://doc.wikimedia.org/mediawiki-core/REL1_42/php/classMediaWiki_1_1Parser_1_1Parser.html#ae450036ec9abb417f142bfdaede02783) states that it returns unsafe HTML, and the `$content` being supplied is from user input.

This was caused by 95351812613e04717f3ad7844cfcc67e4ede4d11.

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> ❌ Invalid as TabberParsoid is not being used

https://github.com/StarCitizenTools/mediawiki-extensions-TabberNeue/blob/2526daa9f8cfdd616c861c8439755cb74a6c8c6e/includes/TabberParsoid.php#L96 This uses unescaped user input as the attribute of an element, thus allowing the user to brea…