What is CVE-2025-21612?

CVE-2025-21612 is a high-severity vulnerability in Starcitizentools Mediawiki-Extensions-Tabberneue, classified under Cross-site Scripting. CVSS score: 8.6/10. Published 2025-01-06.

How severe is CVE-2025-21612?

High severity. CVSS v3 base score is 8.6 out of 10.

XSS in Starcitizentools Mediawiki-Extensions-Tabberneue

CVE-2025-21612

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.005 (39.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L.

Affected products

Starcitizentools Mediawiki-extensions-tabberneue — versions >= 1.9.1, < 2.7.2, >= d8c3db4e5935476e496d979fb01f775d3d3282e6, < f229cab099c69006e25d4bad3579954e481dc566

Weakness classification (CWE)

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2025-21612?: CVE-2025-21612 is a high-severity vulnerability in Starcitizentools Mediawiki-Extensions-Tabberneue, classified under Cross-site Scripting. CVSS score: 8.6/10. Published 2025-01-06.
How severe is CVE-2025-21612?: High severity. CVSS v3 base score is 8.6 out of 10.