Vulnerability · Published Jul 24, 2026 · Assigned by Wordfence

CVE-2026-15420Nexter Blocks <= 5.0.0 - Authenticated (Subscriber+) Path Traversal to Arbitrary CSS/JS File Deletion via 'plus_name' Parameter

Medium 4.3

In plain English

A medium-severity path traversal in Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder from posimyththemes. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities).

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.9%top 41.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
posimyththemes	Nexter Blocks – Gutenberg Blocks, Page Builder & AI Website Builder	0 – through 5.0.0

Weakness: CWE-22 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

In plain English

Official description

Affected products (as reported)

References