Dashboard / CVE-2026-56290

CVE-2026-56290

CRITICAL CISA KEV
ACT NOW Priority: 3.09 BB Relevance: 86/100
Published: 2026-06-29 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: X
AT: None
VC: High
VI: High
VA: High

Description

Joomlack Page Builder contains an improper access control vulnerability that could allow for remote code execution via unauthenticated arbitrary file upload.

CISA Known Exploited Vulnerability

Vendor / Product Joomlack — Page Builder
Date Added 2026-07-07
Remediation Due 2026-07-10
https://www.joomlack.fr/en/joomla-extensions/page-builder-ck ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-56290

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
joomlack page_builder_ck < 3.6.0

References & Advisories (4)

Bug Bounty Relevance

86 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction
✓ Known exploited (KEV)

CVSS Score

10.0 / 10.0 v4.0
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

EPSS — Exploitation Probability

30.87%
Raw Score 0.308660
Percentile 98.2%
Date 2026-10-28

Intelligence Sources

kev ref →
nvd ref →

External Links