Medium severity · published Aug 29, 2026
CVE-2026-76547
Profile Builder < 4.0.1 - Admin+ PHP Object Injection via Import/Export
6.6
CVSS
0.4%
EPSS
No
On KEV
Description
The User Profile Builder WordPress plugin before 4.0.1 does not validate the type of data being deserialized when importing a configuration file, allowing high privilege users such as administrators to conduct PHP Object Injection. The affected feature is a free add-on which is disabled by default, and no POP chain is present in the User Profile Builder WordPress plugin before 4.0.1 itself, so further impact requires a suitable gadget from another installed User Profile Builder WordPress plugin before 4.0.1 or .
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
UP
User Profile Builder ·
3.3.4 before 4.0.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-76547
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-76547
wpscan.com
https://wpscan.com/vulnerability/b80151f4-e910-4263-9ecc-470fb39d7583/
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