Authorization Bypass in CyberPanel Affects Backup Management
CVE-2026-65916

7.2HIGH

Key Information:

Vendor

Usmannasir

Status
Cyberpanel
Vendor
CVE Published:
23 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-65916?

CyberPanel versions up to 1.9.1 are susceptible to a missing authorization vulnerability in the cancelBackupCreation handler. This flaw permits authenticated users to manipulate backup processes of other tenants, including terminating backups, deleting archives, and corrupting status files. By crafting POST requests with arbitrary parameters, attackers can compromise the integrity of backup data and erase vital records within the affected database. Prompt patching is crucial to safeguard against these unauthorized actions.

Affected Version(s)

cyberpanel 0 <= 1.9.1

cyberpanel b1984603f9b0099b39bca46fea176e53b6d4d601

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-65916 - Proof of Concept

References

https://github.com/usmannasir/cyberpanel/issues/1829
technical-descriptionexploit
https://github.com/usmannasir/cyberpanel/commit/b1984603f...
patch
https://www.vulncheck.com/advisories/cyberpanel-missing-a...
third-party-advisory

CVSS V4

Score:
7.2
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

George Chen
.