Qubely <= 1.8.14 - Authenticated (Author+) Stored Cross-Site Scripting

6.4
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2026-39638
CVSS 6.4 (Medium)
Publicly Published February 14, 2026
Last Updated April 15, 2026
Researcher Athiwat Tiprasaharn (Jitlada)

Description

The Qubely plugin for WordPress is vulnerable to Stored Cross-Site Scripting in versions up to, and including, 1.8.14 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-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 Qubely – Advanced Gutenberg Blocks

Software Type Plugin
Software Slug qubely (view on wordpress.org)
Patched? No
Remediation No known patch available. Please review the vulnerability's details in depth and employ mitigations based on your organization's risk tolerance. It may be best to uninstall the affected software and find a replacement.
Affected Version
  • <= 1.8.14

Recent vulnerabilities in Qubely – Advanced Gutenberg Blocks

# Title CVE ID CVSS Researchers Date
1 Qubely – Advanced Gutenberg Blocks <= 1.8.14 - Missing Authorization CVE-2026-65531 5.3 Ananda Dhakal July 23, 2026
2 Qubely <= 1.8.14 - Missing Authorization CVE-2025-58663 5.4 Denver Jackson September 22, 2025
3 Qubely <= 1.8.14 - Authenticated (Contributor+) Sensitive Information Exposure CVE-2025-58249 4.3 Abu Hurayra (HurayraIIT) September 22, 2025
4 Qubely – Advanced Gutenberg Blocks <= 1.8.13 - Authenticated (Contributor+) Sensitive Information Exposure via qubely_get_content CVE-2024-13228 4.3 Nishiv March 10, 2025
5 Qubely <= 1.8.12 - Authenticated (Contributor+) Stored Cross-Site Scripting CVE-2025-26767 6.4 zaim February 14, 2025
6 Qubely – Advanced Gutenberg Blocks <= 1.8.12 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'align' and 'UniqueID' CVE-2024-9601 6.5 Nishiv February 13, 2025
7 Qubely – Advanced Gutenberg Blocks <= 1.8.5 - Insufficient Authorization CVE-2021-24916 5.3 Krzysztof Zając July 17, 2023
8 Quebely <= 1.8.4 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'className' Block Option CVE-2023-0376 6.4 István Márton February 6, 2023
9 Qubely <= 1.7.9 - Incorrect Authorization 5.4 Jan w Oleju June 14, 2022
10 Qubely <= 1.7.8 - Missing Authorization 5.4 Jan w Oleju June 6, 2022

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