CVE-2026-47752 Tugtainer has Server-Side Template Injection in notification templates that leads to Remote Code Execution
Authenticated users can execute arbitrary OS commands as root via Server-Side Template Injection in notification templates.
- 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-2026-47752?
CVE-2026-47752 is a critical code injection vulnerability in Quenary tugtainer, published on 23 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Tugtainer is a self-hosted app for automating updates of Docker containers. Versions prior to 1.30.2 are vulnerable to Server-Side Template Injection (SSTI) in the notification template feature. The `title_template` and `body_template` fields are rendered using an unsandboxed `jinja2.Environment`, allowing any authenticated user to execute arbitrary OS commands as root inside the container. Version 1.30.2 fixes the issue.
Weakness: CWE-1336
Which versions are affected by CVE-2026-47752?
How do I fix CVE-2026-47752?
No fix has been published for CVE-2026-47752 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-47752 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-47752 exists.
Sources
Also known as GHSA-g2cj-2x47-78vq.