CVE-2026-14558
User Frontend: Deserialization of Untrusted Data
- Track*
- CVSS 7.2 High
What it is
ReportedThe 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.
Dates
What is affected
ReportedUser Frontend. Product-level identification only; no affected-version conclusion is available from this field.
Dates
Urgency and basis
Tracker computedTrack*
Current priority score and EPSS: loading from the tracker record. They are read when this page loads and are not shown without JavaScript. They change daily and are not part of "Source last updated".
Dates
Exploitation evidence
Not reportedNot reported by tracked sources.
What to do
ReportedA source remediation link is available. Validate that guidance against the affected product and your environment.
Source remediation ↗Dates
Detection and validation
Mapped metadata availability only. These signals do not change priority.
Sigma, Atomic, Nuclei, and Metasploit: none mapped by tracked sources.
Sigma
Not mapped by tracked sources.
Atomic
Not mapped by tracked sources.
Nuclei
Not mapped by tracked sources.
Evidence detail
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