CVE-2026-6261 Betheme <= 28.4 - Authenticated (Author+) Arbitrary File Upload to Remote Code Execution via Icon Pack Upload
Authenticated attackers with author-level access can upload malicious files to achieve remote code execution in the Betheme WordPress theme.
- 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-2026-6261?
CVE-2026-6261 is a high-severity vulnerability in MuffinGroup Betheme, published on 5 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Betheme theme for WordPress is vulnerable to Arbitrary File Upload in versions up to, and including, 28.4. This is due to the upload_icons() function workflow moving and unzipping user-controlled ZIP files into a public uploads directory without validating extracted file types. This makes it possible for authenticated attackers, with author-level access and above, to upload arbitrary files (including PHP) and achieve remote code execution via the Icons icon-pack upload flow.
Weakness: CWE-434
Which versions are affected by CVE-2026-6261?
How do I fix CVE-2026-6261?
No fix has been published for CVE-2026-6261 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-6261 being exploited?
There is no known exploitation of CVE-2026-6261 in the wild and no public exploit code.
Sources
Also known as GHSA-xjrr-vq8h-v4xh.