CVE-2026-77993
MediumCVSS 5.3Exploitation Probability (EPSS)
Low risk17th percentile - higher than 17% of all known CVEs
Summary
The Joomla extension Page Builder CK before version 3.6.5 is vulnerable to a reflected XSS attack via the iscontenttype parameter. The attack can be executed remotely.
Risk Assessment
An attacker can execute a malicious script in the administrator's browser, potentially leading to session theft or takeover of the admin panel.
Recommendation
Update the Page Builder CK extension to version 3.6.5 or later to eliminate the vulnerability.
Other vulnerabilities in Page Builder CK
See all- CVE-2026-77994Critical
Joomla Extension - joomlack.fr - Second order SQL injection in Page Builder CK < 3.6.5 - The Joomla extension Page Builder CK is vulnerable to a SQL injection issue related to the loadStyles method of the frontend page model.
- CVE-2026-74254Critical
Joomla Extension - joomlack.fr - SQL injection in Page Builder CK < 3.6.5 - The Joomla extension Page Builder CK is vulnerable to a SQL injection issue related to the styles model. Version 3.6.4 fixed the vector in the frontend, 3.6.5 in the backend.
- CVE-2026-63048Critical
Joomla extension Page Builder CK versions 1.0.0-3.1.2, 3.4.0-3.4.11, and 3.5.0-3.6.2 have improper access control, allowing an authenticated arbitrary file upload leading to RCE.
- CVE-2026-62414Critical
The Joomla extension Page Builder CK below version 3.6.2 does not properly apply access control to frontend page list views. An authenticated user can gain unauthorized access to page lists.
- CVE-2026-56290CriticalActively exploited
The Page Builder CK extension for Joomla versions below 3.6.0 contains a vulnerability allowing an unauthenticated attacker to upload arbitrary files, including executable files. This leads to full remote code execution (RCE).
Original NVD description (English source)
Joomla Extension - joomlack.fr - Reflected XSS in Page Builder CK < 3.6.5 - The Joomla extension Page Builder CK is vulnerable to a reflected XSS via the iscontenttype parameter.