CVE-2026-62308 Tugtainer: Authenticated SSRF via arbitrary notification URLs in test_notification endpoint
Authenticated attackers can trigger server-side requests to arbitrary URLs, potentially accessing internal services or metadata.
- 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-2026-62308?
CVE-2026-62308 is a critical server-side request forgery vulnerability in Quenary tugtainer, published on 30 Sep 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. Prior to version 1.30.6, Tugtainer allows an authenticated user to make the backend server send outbound HTTP requests to arbitrary user-supplied URLs through the notification test endpoint. The /settings/test_notification endpoint accepts a urls field and passes it directly to Apprise without restricting protocols, hostnames, localhost addresses, private IP ranges, or cloud metadata addresses. This can be abused as an authenticated blind server-side request forgery (SSRF). This issue has been patched in version 1.30.6.
Weakness: CWE-918
Which versions are affected by CVE-2026-62308?
How do I fix CVE-2026-62308?
No fix has been published for CVE-2026-62308 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-62308 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-62308 exists.
Sources
Also known as GHSA-c2h5-ppv9-7vrq.