The User Frontend WordPress plugin before 4.3.10 does not properly validate field type definitions and deserialises user-controlled post metadata… (CVE-2026-14558)
Description
The User Frontend WordPress plugin versions before 4.3.10 improperly validate field type definitions and deserialize user-controlled post metadata when rendering submitted posts. This vulnerability allows users with Editor-level access or higher to inject arbitrary PHP objects. If a suitable POP (Property Oriented Programming) chain exists on the site, this can lead to remote code execution.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-14558 affects the User Frontend WordPress plugin prior to version 4.3.10. The plugin fails to properly validate field type definitions and deserializes user-controlled post metadata during post rendering. This flaw enables users with Editor-level permissions or above to inject arbitrary PHP objects. Exploitation requires the presence of a suitable POP chain on the site, which can lead to remote code execution.
Potential Impact
Users with Editor-level access or higher can exploit this vulnerability to inject arbitrary PHP objects, potentially leading to remote code execution if a suitable POP chain is available on the affected site. This elevates the risk of full system compromise through the WordPress plugin.
Mitigation Recommendations
A fix is available in User Frontend plugin version 4.3.10. Users should upgrade to version 4.3.10 or later to remediate this vulnerability. No other mitigation guidance is provided in the available data.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-j5mw-m2j3-5747
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-14558"]
Threat ID: 6a91a7c9acd9273b490655b6
Added to database: 08/28/2026, 15:22:49 UTC
Last enriched: 09/10/2026, 00:23:22 UTC
Last updated: 10/12/2026, 06:48:15 UTC
Views: 29
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