TI-2026-61677 Aliases CVE-2026-90770 GHSA-h5c4-vc34-6jcv

Spug through 3.4.0 Remote Code Execution via ping_check

MEDIUM 42CWE-78Published 2026-09-13 · Updated 2026-09-24

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01318 70th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
OpenSpug	spug	up to 3.4.0	—	No fix listed	CNA

spug VendorOpenSpug Affected up to 3.4.0 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-90770
2026-10-03 Alias added: GHSA-h5c4-vc34-6jcv

References

Patch 1

https://github.com/openspug/spug/commit/97aebf133e1f9cbb35ccebadab1faedfdfe93f42

Other 4

TI-2026-70539 OS command injection in OpenSpug Spug File Transfer CVSS 4.0CRITICAL 9.4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences