CVE-2026-71966Public exploitNetwork attack vectorHinoki check available

Authenticated command execution via unquoted backup directory

Published Aug 10, 2026 · Updated Aug 10, 2026

Command injection in CyberPanel 2.4.3 and earlier allows remote authenticated users to execute arbitrary OS commands through remote backups. BackupManager.starRemoteTransfer concatenates the remote API response's dir value into mkdir and chmod command strings without validation or shell quoting. An authenticated panel user must direct a backup at a controlled remote server; successful exploitation runs commands with CyberPanel's OS privileges.

CVSS severity8.7
High
EPSS probability2.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Command injection in CyberPanel 2.4.3 and earlier allows remote authenticated users to execute arbitrary OS commands through remote backups. BackupManager.starRemoteTransfer concatenates the remote API response's dir value into mkdir and chmod command strings without validation or shell quoting. An authenticated panel user must direct a backup at a controlled remote server; successful exploitation runs commands with CyberPanel's OS privileges.

The record

CVE
CVE-2026-71966
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
CyberPanel
Product
CyberPanel
Classifications
CWE-78, T1059
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 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 <=2.4.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

CyberPanel · CyberPanelversion=0 <=2.4.3

Published CVSS scores

8.7VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8VulnCheckCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059Command and Scripting Interpreter

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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