CVE-2025-2918CWE-79

Ultimate Blocks – WordPress Blocks Plugin <= 3.3.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Multiple Widgets

Medium · published June 10, 2025

CVSS v3.1
6.4
EPSS
0%
Percentile
18.2
In the wild
Unconfirmed
What it is

The Ultimate Blocks – WordPress Blocks Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple widgets in all versions up to, and including, 3.3.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

The record
Technical detail
CVSS v3.1
6.4 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00270 · 18.2th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2025-06-10T11:22Z
EPSS history
Timeline
  • 10 JUN 11:22Z
    Ultimate Blocks – WordPress Blocks Plugin <= 3.3.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via Multiple Widgets
    cvelistv5