High severity · published Sep 13, 2026
CVE-2026-90770
Spug through 3.4.0 Remote Code Execution via ping_check
8.8
CVSS
1.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)1.3% · higher than 71% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SP
spug · openspug
through 3.4.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-90770
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-90770
github.com
https://github.com/openspug/spug
github.com
https://github.com/openspug/spug/blob/v3.4.0/spug_api/apps/monitor/executors.py
github.com
https://github.com/openspug/spug/blob/v3.4.0/spug_api/apps/monitor/views.py
github.com
https://github.com/openspug/spug/commit/97aebf133e1f9cbb35ccebadab1faedfdfe93f42
github.com
https://github.com/openspug/spug/issues/741
www.vulncheck.com
https://www.vulncheck.com/advisories/spug-through-3.4.0-remote-code-execution-via-ping-check
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