CVE-2026-56290
Joomla Extension - joomlack.fr - Unauthenticated file upload in Page Builder CK extension < 3.6.0
KEVCRITICAL 10.0EPSS 30.9%
Joomla Extension - joomlack.fr - Unauthenticated file upload in Page Builder CK extension < 3.6.0 - The Joomla extension Page Builder CK is vulnerable to an unauthenticated arbitrary file upload that allows uploading executable files and leads to full RCE.
- Affected
- joomlack.fr · JoomlaCK.fr Page Builder CK extension for Joomla
- CVSS v4.0 JOOMLA
- 10.0 CRITICAL
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:X/U:Red - CVSS v3.1 NVD
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 30.87% chance of exploitation in the next 30 days, 98th percentile
- CISA KEV
- added 2026-07-07
- Nuclei
- critical · CWE-434
- Published
- 2026-06-29
- Updated
- 2026-10-08
Proof-of-concept exploits (5)
- sagsooz/PageBuilderCK-CVE-2026-56290-Exploit2★ · 2026-07-04
- MRCUKIL/com_pagebuilderck1★ · 2026-10-16
- ChiefYoru/CVE-2026-56290_PoC0★ · 2026-07-19
- Jenderal92/CVE-2026-562905★ · 2026-07-08
- katranSefa/CVE-2026-562900★ · 2026-09-05
Nuclei templates (1)
ExploitDB entries (1)
Security advisories
- https://mysites.guru/blog/pagebuilderck-unauthenticated-file-upload-rce
- https://forum.joomlack.fr/index.php/page-builder-ck/21627-nouvelle-version-de-pbck-et-joo…
- https://www.joomlack.fr