CVE-2026-71243CWE-78command-injection

CVE-2026-71243

High · published August 5, 2026

CVSS v3.1
8.8
EPSS
1%
Percentile
43.2
In the wild
Unconfirmed
What it is

The backmeup npm package assembles shell command strings by directly concatenating its option values (name, source, destination, filter) - e.g. cmd = "mkdir -p " + path.join(info.destination, info.name) + "; " - and executes the resulting string through a shell via ssh2-exec (locally via child_process, or remotely via SSH when an ssh handle is supplied), rather than using execFile/spawn with an argument array.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00518 · 43.2th percentile
Weakness
CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-08-05T15:16Z
References (1)
EPSS history
Timeline
  • 05 AUG 10:56Z
    backmeup (npm) - OS Command Injection via Backup Option Values
    cvelistv5