What’s Vulnerable › Vulnerabilities

CVE-2025-21612: Cross-site Scripting in TabberTransclude in Extension:TabberNeue

• Severity: high (CVSS 8.6 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-01-06 · updated 2026-06-17
• Weakness: CWE-79

Description

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.

Affected products

• StarCitizenTools mediawiki-extensions-TabberNeue: from 1.9.1, < 2.7.2; from d8c3db4e5935476e496d979fb01f775d3d3282e6, < f229cab099c69006e25d4bad3579954e481dc566

References

• https://github.com/StarCitizenTools/mediawiki-extensions-TabberNeue/commit/d8c3db4e5935476e496d979fb01f775d3d3282e6
• https://github.com/StarCitizenTools/mediawiki-extensions-TabberNeue/commit/f229cab099c69006e25d4bad3579954e481dc566
• https://github.com/StarCitizenTools/mediawiki-extensions-TabberNeue/security/advisories/GHSA-4x6x-8rm8-c37j

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