What’s Vulnerable › Vulnerabilities

CVE-2026-65916: CyberPanel Missing Authorization in cancelBackupCreation Handler

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-23 · updated 2026-10-24
• Weakness: CWE-862

Description

CyberPanel through 1.9.1, fixed in commit b198460, contains a missing authorization vulnerability in the cancelBackupCreation handler that allows authenticated users to kill, delete, and corrupt other tenants' backups. Attackers can send crafted POST requests with arbitrary backupCancellationDomain and fileName parameters to terminate backup processes, delete backup archives, corrupt backup status files, and remove database records belonging to other tenants.

Affected products

• usmannasir cyberpanel: through 1.9.1

References

• https://github.com/usmannasir/cyberpanel/commit/b1984603f9b0099b39bca46fea176e53b6d4d601
• https://github.com/usmannasir/cyberpanel/issues/1829
• https://www.vulncheck.com/advisories/cyberpanel-missing-authorization-in-cancelbackupcreation-handler

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