CVE-2021-47937 e107 CMS 2.3.0 Authenticated Remote Code Execution via Theme Upload
Authenticated attackers with theme permissions can upload malicious files to execute arbitrary code on e107 CMS.
- 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-2021-47937?
CVE-2021-47937 is a high-severity vulnerability in e107 CMS, published on 10 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
e107 CMS 2.3.0 contains a remote code execution vulnerability that allows authenticated users with theme installation permissions to execute arbitrary commands by uploading malicious theme files. Attackers can upload a crafted theme package through the theme.php endpoint that deploys a web shell to the e107_themes directory, then execute system commands via the payload.php script.
Weakness: CWE-434
Which versions are affected by CVE-2021-47937?
How do I fix CVE-2021-47937?
No fix has been published for CVE-2021-47937 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-47937 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47937 exists.
Sources
Also known as GHSA-2ggw-79xf-f33h.