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CVE-2026-1499

CRITICAL

9.8

Description

The WP Duplicate plugin for WordPress is vulnerable to Missing Authorization leading to Arbitrary File Upload in all versions up to and including 1.1.8. This is due to a missing capability check on the `process_add_site()` AJAX action combined with path traversal in the file upload functionality. This makes it possible for authenticated (subscriber-level) attackers to set the internal `prod_key_random_id` option, which can then be used by an unauthenticated attacker to bypass authentication checks and write arbitrary files to the server via the `handle_upload_single_big_file()` function, ultimately leading to remote code execution.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/6/2026

Last Modified2/6/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-862

References

https://cwe.mitre.org/data/definitions/862.html(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/local-sync/tags/1.1.8/admin/class-local-sync-admin.php#L422(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/local-sync/tags/1.1.8/admin/class-local-sync-files-op.php#L843(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/local-sync/tags/1.1.8/includes/class-local-sync-handle-server-requests.php#L389(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/local-sync/trunk/admin/class-local-sync-admin.php#L422(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/local-sync/trunk/admin/class-local-sync-files-op.php#L843(security@wordfence.com)

https://plugins.trac.wordpress.org/browser/local-sync/trunk/includes/class-local-sync-handle-server-requests.php#L389(security@wordfence.com)

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3452904%40local-sync&old=3400317%40local-sync&sfp_email=&sfph_mail=(security@wordfence.com)

https://www.wordfence.com/threat-intel/vulnerabilities/id/11bb7190-023b-45e1-99a5-7313c489ef45?source=cve(security@wordfence.com)

IOC Correlations

No correlations recorded

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