Vulnerabilities CVE-2026-15420

CVE-2026-15420

Medium

Open

TLP:CLEAR

Nexter Blocks <= 5.0.0 - Authenticated (Subscriber+) Path Traversal to Arbitrary CSS/JS File Deletion via 'plus_name' Parameter

NVD CVE.org

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Description

The Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 5.0.0 via the 'plus_name' parameter. This makes it possible for authenticated attackers, with subscriber-level access and above, to delete arbitrary JS/CSS files on the server, which can lead to denial of service or destruction of critical plugin and theme assets.

Details

CVSS Score: 4.3
EPSS Score ⓘ: 0.59%

45th percentile
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Confidence: 90%
Published: Jul 24, 2026
Last Modified: Jul 24, 2026

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