EUVD-2026-68616
GHSA-5mqc-wggr-wp64
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/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:X/R:X/V:X/RE:X/U:X
Network-reachable but requires high privileges; impact is confined to availability on the vulnerable system only, with no confidentiality, integrity, or scope-change effects.
Primary rating from Vendor (tenable).
CVSS VectorVendor: tenable
Lifecycle Timeline
3DescriptionCVE.org
Improper input validation vulnerability in Extend Themes Kubio AI Website Builder.
This issue affects Kubio AI Website Builder: before 2.9.1.
AnalysisAI
Availability disruption in Kubio AI Website Builder (a WordPress page-builder plugin by Extend Themes) affects all versions before 2.9.1, exploitable by authenticated high-privilege users over a network connection. CWE-20 improper input validation allows a privileged attacker to submit malformed input to the plugin, producing a denial-of-service condition against the vulnerable system with no confidentiality or integrity impact. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid WordPress administrator-level session (PR:H); the attacker must fully authenticate before any exploitation attempt is possible. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 6.9 (Medium) reflects a vulnerability with meaningful but structurally constrained real-world risk. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Kubio AI Website Builder to version 2.9.1 or later, which resolves this improper input validation flaw. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-20 – Improper Input Validation
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External POC / Exploit Code
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