CVE-2026-30917
Stored XSS on Bucket namespace pages
- State
- Published
- Severity
- 8.8 High
- Published
- Mar 9, 2026
- Updated
- Mar 10, 2026
- Reserved
- Mar 7, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.8 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:L/SI:L/SA:L | GitHub_M |
Weaknesses
- CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products
| Product | Versions |
|---|---|
mediawiki-extensions-Bucketweirdgloop |
|
References
- https://github.com/weirdgloop/mediawiki-extensions-Bucket/security/advisories/GHSA-8jrp-37wc-5v7c
- https://github.com/weirdgloop/mediawiki-extensions-Bucket/commit/46ec08876ba9064987f20e8f42690854202a73ff
- https://github.com/weirdgloop/mediawiki-extensions-Bucket/commit/cba9cf9c8751e9f3e6d559f44cadc39b84f7bff6
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