CVE-2026-71243Network attack vector

Command execution via concatenated backup options

Published Aug 5, 2026 · Updated Aug 5, 2026

OS command injection in Adaltas backmeup 0.0.2 and earlier allows remote authenticated users to execute commands via backup options. The backup, cleanup, and listing functions concatenate name, source, destination, and filter values into shell strings without neutralizing metacharacters before passing them to ssh2-exec. Exploitation requires a consuming application to supply attacker-controlled options; commands run on the backup host or configured SSH target.

CVSS severity8.8
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Adaltas backmeup 0.0.2 and earlier allows remote authenticated users to execute commands via backup options. The backup, cleanup, and listing functions concatenate name, source, destination, and filter values into shell strings without neutralizing metacharacters before passing them to ssh2-exec. Exploitation requires a consuming application to supply attacker-controlled options; commands run on the backup host or configured SSH target.

The record

CVE
CVE-2026-71243
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
Adaltas
Product
backmeup
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=0.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Adaltas · backmeupversion=0 <=0.0.2

Published CVSS scores

8.8GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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