PHP Object Injection Vulnerability in User Profile Builder WordPress Plugin
CVE-2026-76547
Key Information:
- Vendor
WordPress
- Status
- Vendor
- CVE Published:
- 29 August 2026
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What is CVE-2026-76547?
The User Profile Builder WordPress plugin prior to version 4.0.1 exhibits a flaw in its deserialization process, failing to properly validate the data when importing configuration files. This vulnerability enables high privilege users, such as administrators, to potentially perform PHP Object Injection attacks. While the affected feature is a free add-on that is disabled by default, the exploit could still lead to further vulnerabilities if a malicious gadget from an alternative installed instance of the plugin is utilized.
Affected Version(s)
User Profile Builder 3.3.4 < 4.0.1
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.