CVE-2026-56290Critical· 9.8▾ Hadal⚠ Exploited in the wildPoC availableJoomla 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…
▾ Hadal zone — Critical and actively exploited (CISA KEV / 0day)
impact 53.9 · likelihood 6.2 · exploitation 25
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 3 sources. Availability, not in-the-wild use.
Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Jul 31.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Federal remediation due Jul 10, 2026
Exploit-DB · 5 GitHub repos · Nuclei ×1
83%
Last analysed / modified upstream
Added to the CISA catalog on Jul 7, 2026. Federal remediation due Jul 10, 2026. View catalog ↗
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.
page_builder_ck < 3.6.0Upgrade past the affected range:
page_builder_ck 3.6.0Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
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