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TI-2026-49914 Aliases CVE-2026-71243GHSA-c6xg-rfqh-85cp

backmeup (npm) - OS Command Injection via Backup Option Values

Priority MEDIUM 41CWE-78Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-78.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00518 44th 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

VendorProductAffected versionsFixed inStatusSource
adaltasbackmeupup to 0.0.2—No fix listedCNA
  • backmeup Vendoradaltas Affected up to 0.0.2 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-71243
  2. 2026-10-03 Alias added: GHSA-c6xg-rfqh-85cp

References

Advisory 1

  • TI-2026-58440 node-csv: Prototype replacement still reachable via columns path CVSS 4.0MEDIUM 6.9
  • TI-2021-09842 In Node.js mixme, prior to v0.5.1, an attacker can add or alter properties of an object… CVSS 3.1CRITICAL 9.1
  • TI-2021-06050 Regular expression denial of service (ReDoS) in printf CVSS 3.1HIGH 7.5

Sources

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