XSS in Weirdgloop Mediawiki-Extensions-Bucket

CVE-2026-30917

Bucket is a MediaWiki extension to store and retrieve structured data on articles. Prior to 2.1.1, a stored XSS can be inserted into any Bucket table field that has a PAGE type, which will execute whenever a user views that table's corresponding Bucket namespace page. This vulnerability is fixed in 2.1.1.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (22.0th percentile) — read the EPSS interpretation.

Affected products

Weakness classification (CWE)

References