CVE-2025-8567
Nexter Blocks <= 4.5.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via Multiple Widgets
CVSS Score
6.4
EPSS Score
0.0%
EPSS Percentile
0th
The Nexter Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple widgets in all versions up to, and including, 4.5.4 due to insufficient input sanitization and output escaping on user supplied attributes. 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.
| CWE | CWE-79 |
| Vendor | posimyththemes |
| Product | nexter blocks – gutenberg blocks, page builder & ai website builder |
| Published | Aug 19, 2025 |
| Last Updated | Apr 8, 2026 |
Stay Ahead of the Next One
Get instant alerts for posimyththemes nexter blocks – gutenberg blocks, page builder & ai website builder
Be the first to know when new medium vulnerabilities affecting posimyththemes nexter blocks – gutenberg blocks, page builder & ai website builder are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
posimyththemes / Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder
0 ≤ 4.5.4
References
Credits
D.Sim