CVE-2026-55679 WeGIA: Pre-auth Installer Injection Chain Enables Command Execution and Arbitrary PHP Code Injection
Unauthenticated attackers can execute arbitrary commands and inject PHP code via the pre-installation endpoint, leading to full system compromise.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-55679?
CVE-2026-55679 is a medium-severity command injection vulnerability in LabRedesCefetRJ WeGIA, published on 14 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
WeGIA is a web manager for charitable institutions. Prior to 3.8.6, the pre-installation web/instalador/instalador.php endpoint is reachable before config.php exists and processes unauthenticated installation POST data. In the Linux reinstall flow, a crafted usuario value reaches a command executed by shell_exec(). The installer also writes attacker-controlled values into executable config.php and concatenates the database name nomebd into a CREATE DATABASE statement. Successful exploitation can execute commands as the web-server user, persist attacker-controlled PHP configuration, and alter or disrupt the application and its data. This issue is fixed in version 3.8.6.
Which versions are affected by CVE-2026-55679?
How do I fix CVE-2026-55679?
No fix has been published for CVE-2026-55679 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-55679 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55679 exists.
Sources
Also known as GHSA-wm6j-4rfm-399q.