CVE-2026-90770 Spug through 3.4.0 Remote Code Execution via ping_check
Authenticated attackers can execute arbitrary commands by injecting shell metacharacters into monitor addresses in the Spug platform.
- 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-2026-90770?
CVE-2026-90770 is a high-severity command injection vulnerability in openspug spug, published on 13 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Spug through 3.4.0 contains a remote code execution vulnerability in the ping_check function that interpolates user-supplied monitor addresses directly into shell commands without validation. Authenticated users with monitor permissions can inject shell metacharacters via the /monitor/run_test/ endpoint to execute arbitrary commands as the Spug process user.
Weakness: CWE-78
Which versions are affected by CVE-2026-90770?
How do I fix CVE-2026-90770?
No fix has been published for CVE-2026-90770 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-2026-90770 being exploited?
There is no known exploitation of CVE-2026-90770 in the wild and no public exploit code.
Sources
Also known as GHSA-h5c4-vc34-6jcv.