CVE-2026-1499 WP Duplicate <= 1.1.8 - Authenticated (Subscriber+) Arbitrary File Upload via 'process_add_site' AJAX Action
Authenticated subscribers can exploit missing authorization and path traversal to upload arbitrary files, leading to remote code execution.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-1499?
CVE-2026-1499 is a high-severity vulnerability in revmakx WP Duplicate – WordPress Migration Plugin, published on 6 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2026-1499?
How do I fix CVE-2026-1499?
No fix has been published for CVE-2026-1499 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-1499 being exploited?
There is no known exploitation of CVE-2026-1499 in the wild and no public exploit code.
Sources
Also known as GHSA-r262-f4qm-hrp9.