CVE-2025-4279 External image replace <= 1.0.8 - Authenticated (Contributor+) Arbitrary File Upload
Authenticated contributors can upload arbitrary files via missing validation, potentially leading to remote code execution on WordPress sites.
- 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-2025-4279?
CVE-2025-4279 is a high-severity vulnerability in muromuro External image replace, published on 5 May 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The External image replace plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the 'external_image_replace_get_posts::replace_post' function in all versions up to, and including, 1.0.8. This makes it possible for authenticated attackers, with contributor-level and above permissions, to upload arbitrary files on the affected site's server which may make remote code execution possible.
Weakness: CWE-434
Which versions are affected by CVE-2025-4279?
How do I fix CVE-2025-4279?
No fix has been published for CVE-2025-4279 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-4279 being exploited?
There is no known exploitation of CVE-2025-4279 in the wild and no public exploit code.
Sources
Also known as GHSA-f6pm-4wh2-f46p.