CVE-2026-90770

Summary

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.

Affected Software

Weaknesses

• CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

References

• https://github.com/openspug/spug/issues/741
• https://github.com/openspug/spug
• https://github.com/openspug/spug/blob/v3.4.0/spug_api/apps/monitor/executors.py
• https://github.com/openspug/spug/blob/v3.4.0/spug_api/apps/monitor/views.py
• https://github.com/openspug/spug/commit/97aebf133e1f9cbb35ccebadab1faedfdfe93f42
• https://www.vulncheck.com/advisories/spug-through-3.4.0-remote-code-execution-via-ping-check

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