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PatchSiren cyber security CVE debrief

CVE-2026-39474 metaphorcreations CVE debrief

CVE-2026-39474 is a HIGH severity vulnerability (CVSS Score: 8.8) affecting Post Duplicator plugin versions <= 3.0.10. The vulnerability allows for Contributor PHP Object Injection. The CVE was published on [cvePublishedAt](https://www.cve.org/CVERecord?id=CVE-2026-39474) and last modified on [cveModifiedAt](https://nvd.nist.gov/vuln/detail/CVE-2026-39474).

Vendor
metaphorcreations
Product
Post Duplicator
CVSS
HIGH 8.8
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-15
Original CVE updated
2026-06-15
Advisory published
2026-06-15
Advisory updated
2026-06-15

Who should care

Users of Post Duplicator plugin versions <= 3.0.10 should update to a patched version to prevent potential exploitation.

Technical summary

The vulnerability is caused by a PHP Object Injection issue in the Post Duplicator plugin. This type of vulnerability occurs when an attacker can inject malicious PHP objects into the application, potentially leading to code execution.

Defensive priority

HIGH

Recommended defensive actions

  • Update Post Duplicator plugin to a version greater than 3.0.10.
  • Review and monitor your WordPress installation for any suspicious activity.

Evidence notes

The vulnerability was reported by Patchstack (see [ref-4](https://patchstack.com/database/wordpress/plugin/post-duplicator/vulnerability/wordpress-post-duplicator-plugin-3-0-10-php-object-injection-vulnerability?_s_id=cve)).

Sources and references

Verified primary and authoritative sources

  • CVE-2026-39474 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-39474

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-39474 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-39474

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.