CVE-2025-15678CWE-79cross-site-scripting

CVE-2025-15678

Medium · published August 6, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
15.8
In the wild
Unconfirmed
What it is

The Nexter Blocks WordPress plugin before 5.0.2 does not sanitize uploaded SVG files and allows SVG uploads for any user able to upload files (Author by default), allowing them to upload a file containing malicious JavaScript that executes when the file is accessed, leading to Stored Cross-Site Scripting.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00253 · 15.8th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-08-06T11:16Z
References (1)
EPSS history
Timeline
  • 06 AUG 06:00Z
    Nexter Blocks < 5.0.2 - Author+ Stored XSS via SVG Upload
    cvelistv5