Profile Builder < 4.0.1 - Admin+ PHP Object Injection via Import/Export

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-76547
StatePUBLISHED
AssignerWPScan
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-29 06:17:29 UTC
Updated2026-08-31 20:14:36 UTC
DescriptionThe 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 .

Risk And Classification

Primary CVSS: v3.1 6.6 MEDIUM from ADP

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.002460000 probability, percentile 0.157480000 (date 2026-09-02)

Problem Types: CWE-502 | CWE-502 Deserialization of Untrusted Data | CWE-502 CWE-502 Deserialization of Untrusted Data

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED6.6MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary6.6MEDIUMCVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Unknown User Profile Builder affected 3.3.4 4.0.1 semver Not specified

References

ReferenceSourceLinkTags
wpscan.com/vulnerability/b80151f4-e910-4263-9ecc-470fb39d7583 [email protected] wpscan.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Vivien LEBAS (en)

CNA: WPScan (en)

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