CVE-2026-56290 KEV EXPLOIT
9.8
CRITICAL · CVSS 3.1 · EPSS 30.9% (pctl 98)
Patch first
On CISA KEV — known exploited in the wild, due 2026-07-10.
Description
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.
Scoring
| CVSS | 9.8 (CRITICAL, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 30.87% — more likely to be exploited than 98% of all CVEs |
| Weakness | CWE-434 |
| On CISA KEV | yes — remediate by 2026-07-10 |
| Public exploit | yes |
| Published | 2026-06-29 |
| Last modified | 2026-07-24 |
CISA KEV
| Name | Joomlack Page Builder Improper Access Control Vulnerability |
|---|---|
| Added | 2026-07-07 |
| Due | 2026-07-10 |
| Vendor / product | Joomlack / Page Builder |
| Ransomware use | none reported |
Affected (1)
| Vendor | Product |
|---|---|
| joomlack | page builder ck |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Joomla Page Builder CK 3.5.10 - Arbitrary File Upload | 2026-07-08 |
References
→ the Explorer · watch your stack · NVD