Vulnerability Intelligence Report
Joomla Extension - joomlack.fr - Reflected XSS in Page Builder CK < 3.6.5
CVE-2026-77993
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.
Cross-Site Scripting (XSS)
No Active Exploit Signals
CVSS Base Score
5.3
MEDIUM
EPSS Probability:0.26%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
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Authentication
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Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-79 ↗CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| joomlack.fr | Page Builder CK extension for Joomla | 1.0.0-3.6.4 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Joomla! Project · Vendor · USA |
| Reserved | 2026-08-21T19:05:09 |
| Published | 2026-08-24T08:00:44 |
| Last Updated | 2026-08-25T04:51:47 |
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