CVE-2026-90770: Spug through 3.4.0 Remote Code Execution via ping_check

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-09-13 · updated 2026-09-23
Weakness: CWE-78

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.

Affected products

openspug spug: through 3.4.0

References

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://github.com/openspug/spug/issues/741
https://www.vulncheck.com/advisories/spug-through-3.4.0-remote-code-execution-via-ping-check

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