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CVE-2026-39474: CWE-502 Deserialization of Untrusted Data in metaphorcreations Post Duplicator

0
High
VulnerabilityCVE-2026-39474cvecve-2026-39474cwe-502
Published: Mon Jun 15 2026 (06/15/2026, 20:17:49 UTC)
Source: CVE Database V5
Vendor/Project: metaphorcreations
Product: Post Duplicator

Description

CVE-2026-39474 is a high severity vulnerability in metaphorcreations Post Duplicator plugin versions up to 3.0.10. It involves PHP Object Injection due to deserialization of untrusted data, classified under CWE-502. This vulnerability allows an attacker with low privileges and no user interaction to potentially execute arbitrary code and cause a complete compromise of confidentiality, integrity, and availability.

CVSS v3.1

Score 8.8high

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected software

Affected versions
<=3.0.10

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 06/15/2026, 22:15:28 UTC

Technical Analysis

This vulnerability in Post Duplicator (<= 3.0.10) arises from unsafe deserialization of untrusted data leading to PHP Object Injection (CWE-502). The CVSS 3.1 score of 8.8 indicates network exploitable with low attack complexity, requiring low privileges and no user interaction. Successful exploitation impacts confidentiality, integrity, and availability at a high level. No official patch or remediation level is currently documented, and no known exploits are reported in the wild.

Potential Impact

Exploitation of this vulnerability can lead to full compromise of the affected system, including arbitrary code execution, data disclosure, and disruption of service. The attacker requires only low privileges and can exploit remotely without user interaction, making it a significant risk for affected installations.

Mitigation Recommendations

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the affected plugin and monitor for suspicious activity. Avoid using vulnerable versions of Post Duplicator if possible.

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Technical Details

Data Version
5.2
Assigner Short Name
Patchstack
Date Reserved
2026-04-07T10:42:07.235Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
null

Threat ID: 6a3061410b89be688893cf30

Added to database: 6/15/2026, 8:32:01 PM

Last enriched: 6/15/2026, 10:15:28 PM

Last updated: 6/16/2026, 5:00:57 AM

Views: 4

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