Gutenverse <= 1.8.5 - Missing Authorization via 'data/update' API Endpoint

5.3
Missing Authorization
CVE CVE-2023-35875
CVSS 5.3 (Medium)
Publicly Published June 19, 2023
Last Updated January 22, 2024
Researcher Kévin Mosbahi (Mika)

Description

The Gutenverse plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'data/update' API Endpoint function in versions up to, and including, 1.8.5. This makes it possible for unauthenticated attackers to perform an unauthorized data update.

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Vulnerability Details for Gutenverse – WordPress Blocks, Page Builder & Site Editor

Software Type Plugin
Software Slug gutenverse (view on wordpress.org)
Patched? Yes
Remediation Update to version 1.8.6, or a newer patched version
Affected Version
  • <= 1.8.5
Patched Version
  • 1.8.6

Recent vulnerabilities in Gutenverse – WordPress Blocks, Page Builder & Site Editor

# Title CVE ID CVSS Researchers Date
1 Gutenverse <= 3.8.0 - Authenticated (Editor+) Stored Cross-Site Scripting via 'fonts[].font.font.value' Parameter CVE-2026-12399 4.4 R4mbb, R4mbb June 26, 2026
2 Gutenverse <= 3.4.6 - Reflected Cross-Site Scripting via 's' Parameter CVE-2026-3001 6.1 Osvaldo Noe Gonzalez Del Rio (Os) May 26, 2026
3 Gutenverse – Ultimate WordPress FSE Blocks Addons & Ecosystem <= 3.5.3 - Authenticated (Contributor+) Server-Side Request Forgery via 'imageUrl' CVE-2026-2948 6.4 Osvaldo Noe Gonzalez Del Rio (Os) May 4, 2026
4 Gutenverse – Ultimate WordPress FSE Blocks Addons & Ecosystem <= 3.5.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'separatorIconSVG' CVE-2026-2868 6.4 Athiwat Tiprasaharn (Jitlada) May 4, 2026
5 Gutenverse – Ultimate WordPress FSE Blocks Addons & Ecosystem <= 3.4.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'imageLoad' CVE-2026-2924 6.4 Muhammad Yudha - DJ April 3, 2026
6 Gutenverse <= 3.2.1 - Missing Authorization CVE-2025-66065 4.3 Denver Jackson November 28, 2025
7 Gutenverse <= 3.1.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via Animated Text and Fun Fact Blocks CVE-2025-7727 6.4 zer0gh0st August 5, 2025
8 Gutenverse <= 2.2.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via countdown Block CVE-2025-2893 6.4 Webbernaut April 28, 2025
9 Gutenverse <= 1.9.4 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2024-43920 6.4 João Pedro Soares de Alcântara August 26, 2024
10 Gutenverse <= 1.9.2 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2024-38785 6.4 João Pedro Soares de Alcântara July 19, 2024

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