CVE-2026-71966
Authenticated command injection in CyberPanel remote backup transfer allowing OS command execution.
Is CVE-2026-71966 being exploited?
Not confirmed. CVE-2026-71966 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 2.1% probability of exploitation in the next 30 days.
How severe is CVE-2026-71966?
CVE-2026-71966 is rated High. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-71966?
Yes. A fix has been recorded for CVE-2026-71966. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-71966 affect?
CVE-2026-71966 affects CyberPanel <= 2.4.3, Servers running CyberPanel, Remote backup transfer API. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-71966?
Apply vendor patch/update (commit eca0c3c) or disable remote backups and restrict control panel access.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated attacker can inject OS commands via crafted remote backup API response, enabling remote code execution and full server compromise.
Immediate action required
- affected<= 2.4.3
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.