EUVD-2026-67567
GHSA-j5mw-m2j3-5747
Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Network-accessible WordPress endpoint requires Editor credentials (PR:H); POP chain dependency is environmental, not a CVSS AC factor; full C/I/A impact on successful exploitation.
Primary rating from Vendor (WPScan).
CVSS VectorVendor: WPScan
Lifecycle Timeline
4DescriptionCVE.org
The User Frontend WordPress plugin before 4.3.10 does not properly validate field type definitions and deserialises user-controlled post metadata when rendering submitted posts, allowing users with Editor-level access and above to inject arbitrary PHP objects, which can lead to remote code execution when a suitable POP chain is present on the site.
Articles & Coverage 1
AnalysisAI
PHP object injection via unsafe deserialization in the User Frontend WordPress plugin (versions before 4.3.10) grants Editor-level users the ability to execute arbitrary PHP code on the host server. The plugin fails to validate field type definitions and deserializes user-controlled post metadata at render time - a CWE-502 flaw exploitable through any available POP chain present in the WordPress environment. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires authenticated access at WordPress Editor level or above - reflected as PR:H in the CVSS:3.1 vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS score of 7.2 with PR:H accurately reflects that exploitation is gated behind Editor-level WordPress credentials, meaningfully constraining the exposed population compared to unauthenticated or subscriber-level flaws. … 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 | Update the User Frontend WordPress plugin to version 4.3.10 or later immediately; this is the vendor-confirmed patched release per the WPScan advisory (https://wpscan.com/vulnerability/217303f4-4363-46f6-8aee-8e0c1aedc271/) and the NVD entry (https://nvd.nist.gov/vuln/detail/CVE-2026-14558). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all WordPress instances running the User Frontend plugin and determine current versions. …
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External POC / Exploit Code
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