CVE-2025-8567

Nexter Blocks <= 4.5.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via Multiple Widgets

CVSS 6.4 MEDIUMEPSS 0.2%CWE-79

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.4EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

19 Aug 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Affected products

posimyththemes · Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder

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References

https://plugins.trac.wordpress.org/changeset/3342664/https://wordpress.org/plugins/the-plus-addons-for-block-editor/#developers https://www.wordfence.com/threat-intel/vulnerabilities/id/ca9ad8ca-aad1-4950-b540-64ffc4a07c12?source=cve