Vulnerability · Published Aug 6, 2026 · Assigned by WPScan
CVE-2025-15678Nexter Blocks < 5.0.2 - Author+ Stored XSS via SVG Upload
Medium 6.1
In plain English
A medium-severity cross-site scripting in Nexter Blocks from Unknown. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 17% of all known vulnerabilities).
Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.3%top 83.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | Nexter Blocks | 0 – before 5.0.2 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
References
- https://wpscan.com/vulnerability/2405c1ef-844a-462b-8329-c09d33b255b2/ exploit, vdb-entry, technical-description