CVE-2025-26871: WordPress Essential Blocks plugin <= 4.8.3 - Broken Access Control vulnerability

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-02-25 · updated 2026-06-17
Weakness: CWE-862

Description

Missing Authorization vulnerability in WPDeveloper Essential Blocks for Gutenberg essential-blocks allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Essential Blocks for Gutenberg: from n/a through <= 4.8.3.

Affected products

wpdevteam Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns: before 4.8.4 — fixed in 4.8.4

How to fix

Upgrade to a fixed version: wpdevteam Gutenberg Essential Blocks – Page Builder for Gutenberg Blocks & Patterns 4.8.4. Check the vendor advisory for mitigations.

References

https://patchstack.com/database/Wordpress/Plugin/essential-blocks/vulnerability/wordpress-essential-blocks-plugin-4-8-3-broken-access-control-vulnerability?_s_id=cve

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