# CVE-2026-90770

## Summary

- **CVE ID:** CVE-2026-90770
- **Severity:** HIGH
- **CVSS Score:** 8.8 (CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-78
- **Published:** Sep 13, 2026
- **Last Modified:** Sep 13, 2026

## 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 (0)

## References

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

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.72%
- **EPSS Percentile:** 52.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-19._