CVE-2026-30917CWE-79

Stored XSS on Bucket namespace pages

High · published March 9, 2026

CVSS v4.0
8.8
EPSS
1%
Percentile
44.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
8.8 · HIGH
Vector
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
EPSS
0.00537 · 44.4th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-03-09T22:50Z
EPSS history
Timeline
  • 09 MAR 22:50Z
    Stored XSS on Bucket namespace pages
    cvelistv5