How severe is CVE-2026-15420?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Path Traversal in Posimyththemes Nexter Blocks – Gutenberg Blocks, Page Builder & Ai Website

CVE-2026-15420

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 authent…

Vulnerability class: Path Traversal (Directory Traversal)

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.

Affected products

Posimyththemes Nexter Blocks – Gutenberg Blocks, Page Builder & Ai Website — versions 0

Weakness classification (CWE)

CWE-22 — Path Traversal

References

Frequently asked questions

What is CVE-2026-15420?: CVE-2026-15420 is a medium-severity vulnerability in Posimyththemes Nexter Blocks – Gutenberg Blocks, Page Builder & Ai Website, classified under Path Traversal. CVSS score: 4.3/10. Published 2026-07-24.
How severe is CVE-2026-15420?: Medium severity. CVSS v3 base score is 4.3 out of 10.