CVE-2026-65916

HIGH 8.1

CyberPanel Missing Authorization in cancelBackupCreation Handler

CVSS Score

8.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-862
Vendor	usmannasir
Product	cyberpanel
Published	Jul 23, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

High

Affected Versions

usmannasir / cyberpanel

0 ≤ 1.9.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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

Credits

George Chen