PHP Object Injection Vulnerability in WP User Frontend by WordPress
CVE-2026-81283

8.8HIGH

Key Information:

Vendor

WordPress
Status
WP User Frontend
Vendor
CVE Published:
2 September 2026

What is CVE-2026-81283?

A PHP Object Injection vulnerability exists in the WP User Frontend plugin for WordPress, affecting versions up to 4.3.10. This vulnerability could allow attackers to exploit the deserialization of untrusted data, potentially leading to unauthorized access or manipulation of the application. It is crucial for users of affected versions to apply the latest updates to mitigate risks associated with this security flaw.

Affected Version(s)

WP User Frontend <= 4.3.10

References

https://patchstack.com/database/wordpress/plugin/wp-user-...
vdb-entry

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

VanTastic | Patchstack Bug Bounty Program
.