Vulnerability details

CVE-2026-90770

openspug spug

Spug through 3.4.0 Remote Code Execution via ping_check

CVSS 4.0

8.7High

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.

CVSS scores

Score	Version	Source	Vector
8.7High	4.0	CVEProject cvelistV5 (CNA) (VulnCheck)	`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`
8.8High	3.1	CVEProject cvelistV5 (CNA) (VulnCheck)	`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
openspug	spug	v ≤ 3.4.0	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/openspug/spug/issues/741 issue-tracking
https://github.com/openspug/spug product
https://github.com/openspug/spug/blob/v3.4.0/spug_api/apps/monitor/executors.py technical-description
https://github.com/openspug/spug/blob/v3.4.0/spug_api/apps/monitor/views.py technical-description
https://github.com/openspug/spug/commit/97aebf133e1f9cbb35ccebadab1faedfdfe93f42 patch
https://www.vulncheck.com/advisories/spug-through-3.4.0-remote-code-execution-via-ping-check third-party-advisory

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Details

Published: 2026-09-13
Last updated: 2026-09-24
State: Published
Assigner (CNA): VulnCheck

Exploit prediction (EPSS)

1.31%

Probability of exploitation in 30 days

70.9%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

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