Spectra – WordPress Gutenberg Blocks <= 2.19.0 - Authenticated (Contributor+) Stored Cross-Site Scripting

6.4
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2025-1784
CVSS 6.4 (Medium)
Publicly Published March 25, 2025
Last Updated July 2, 2025
Researcher Peter Thaleikis

Description

The Spectra – WordPress Gutenberg Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the uagb block in all versions up to, and including, 2.19.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Learn more about Cross-Site Scripting vulnerabilities and how to prevent them.

References

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Vulnerability Details for Spectra Gutenberg Blocks – Website Builder for the Block Editor

Software Type Plugin
Software Slug ultimate-addons-for-gutenberg (view on wordpress.org)
Patched? Yes
Remediation Update to version 2.19.1, or a newer patched version
Affected Version
  • <= 2.19.0
Patched Version
  • 2.19.1

Recent vulnerabilities in Spectra Gutenberg Blocks – Website Builder for the Block Editor

# Title CVE ID CVSS Researchers Date
1 Spectra Gutenberg Blocks <= 2.19.25 - Authenticated (Contributor+) Remote Code Execution via Arbitrary PHP Function Call via Block Attributes CVE-2026-7465 8.8 kai63001 May 29, 2026
2 Spectra <= 2.19.22 - Missing Authorization CVE-2026-42648 4.3 Trương Hữu Phúc (truonghuuphuc) March 27, 2026
3 Spectra Gutenberg Blocks <= 2.19.17 - Unauthenticated Information Disclosure in Sensitive Data CVE-2026-0950 5.3 johska February 2, 2026
4 Spectra <= 2.19.17 - Missing Authorization CVE-2026-24982 5.3 Bao - BlueRock January 17, 2026
5 Spectra <= 2.19.14 - Authenticated (Contributor+) Stored Cross-Site Scripting via Custom CSS CVE-2025-11162 6.4 Muhammad Yudha - DJ November 4, 2025
6 Spectra – WordPress Gutenberg Blocks <= 2.16.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via Team Widget CVE-2024-10484 6.4 zer0gh0st December 2, 2024
7 Spectra – WordPress Gutenberg Blocks <= 2.15.0 - Authenticated (Contributor+) Stored Cross-site Scripting CVE-2024-7590 6.4 João Pedro Soares de Alcântara August 7, 2024
8 Spectra <= 2.13.7 - Missing Authorization via generate_ai_content CVE-2024-37517 4.3 Rafie Muhammad July 5, 2024
9 Spectra – WordPress Gutenberg Blocks <= 2.13.0 - Authenticated (Author+) Stored Cross-Site Scripting CVE-2024-4366 6.4 Ngô Thiên An (ancorn_) May 23, 2024
10 Spectra – WordPress Gutenberg Blocks <= 2.12.8 - Authenticated (Contributor+) Stored Cross-Site Scripting via Image Gallery Block CVE-2024-1815 6.4 wesley (wcraft) May 22, 2024

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