CVE-2026-19116: CWE-502 Deserialization of Untrusted Data in User Frontend
Description
A deserialization vulnerability exists in the User Frontend WordPress plugin before version 4.3.11. Authenticated users with subscriber-level access or higher can exploit this flaw by submitting posts that are reopened in the frontend editing form, allowing PHP Object Injection. This may lead to remote code execution if a suitable gadget chain is present on the site.
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The User Frontend WordPress plugin prior to version 4.3.11 does not properly prevent deserialization of user-supplied field values when a submitted post is reopened in its frontend editing form. This allows authenticated users with subscriber-level privileges or above to perform PHP Object Injection attacks. Successful exploitation may result in remote code execution if the site contains an appropriate gadget chain to trigger malicious code during deserialization.
Potential Impact
An attacker with subscriber-level access or higher can exploit this vulnerability to perform PHP Object Injection, potentially leading to remote code execution. This compromises confidentiality, integrity, and availability of the affected system, allowing full control over the WordPress site.
Mitigation Recommendations
No official patch or remediation details are provided in the input data. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict user permissions to trusted users only and monitor for suspicious activity related to frontend post editing.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-f6hp-2qj5-48vv
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-19116"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a98452cacd9273b496aa7da
Added to database: 09/02/2026, 15:47:56 UTC
Last enriched: 09/07/2026, 20:52:25 UTC
Last updated: 10/17/2026, 06:48:16 UTC
Views: 38
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