PT-2025-33717 · WordPress · Nexter Blocks

D.Sim · Published 2025-08-19 · Updated 2025-08-19 · CVE-2025-8567

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: Nexter Blocks versions prior to 4.5.5

Description: The Nexter Blocks plugin for WordPress is susceptible to Stored Cross-Site Scripting (XSS) via multiple widgets. Insufficient input sanitization and output escaping on user-supplied attributes allows authenticated attackers with contributor-level access or higher to inject arbitrary web scripts into pages. These scripts will execute when a user accesses the injected page.

Recommendations: Update Nexter Blocks to version 4.5.5 or later.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-8567

Affected Products

Nexter Blocks

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2025-8567 · Security Note
• https://t.me/cveNotify/132768 · Telegram Post
• https://wordpress.org/plugins/the-plus-addons-for-block-editor/#developers · Note
• https://t.me/CVEtracker/30342 · Telegram Post
• https://wordfence.com/threat-intel/vulnerabilities/id/ca9ad8ca-aad1-4950-b540-64ffc4a07c12?source=cve · Note
• https://plugins.trac.wordpress.org/changeset/3342664 · Note
• https://twitter.com/CVEnew/status/1957726325034164633 · Twitter Post
• https://twitter.com/VulmonFeeds/status/1957736345620595152 · Twitter Post