Medium severity · published Aug 24, 2026
CVE-2026-77993
Joomla Extension - joomlack.fr - Reflected XSS in Page Builder CK < 3.6.5
5.3
CVSS
0.4%
EPSS
No
On KEV
Description
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.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PB
Page Builder CK extension for Joomla · joomlack.fr
1.0.0-3.6.4 · source: vendor
Affected product
PB
Page Builder CK extension for Joomla
joomlack.fr
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-77993
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-77993
www.joomlack.fr
https://www.joomlack.fr/
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