What is CVE-2026-49481?

CVE-2026-49481 is a critical-severity vulnerability in Seriousm4x Upsnap, classified under OS Command Injection. CVSS score: 9.6/10. Published 2026-08-12.

How severe is CVE-2026-49481?

Critical severity. CVSS v3 base score is 9.6 out of 10.

RCE in Seriousm4x Upsnap

CVE-2026-49481

UpSnap is a wake on lan web app. Versions prior to 5.4.0 have an OS command injection vulnerability in the UpSnap’s device management functionality due to the presence of unsafe shell command template interpolation using the ip and the mac…

Vulnerability class: Command Injection (OS Command Injection)

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N.

Affected products

Seriousm4x Upsnap — versions < 5.4.0

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-49481?: CVE-2026-49481 is a critical-severity vulnerability in Seriousm4x Upsnap, classified under OS Command Injection. CVSS score: 9.6/10. Published 2026-08-12.
How severe is CVE-2026-49481?: Critical severity. CVSS v3 base score is 9.6 out of 10.