CVE-2026-28442 — HIGH (8.5)

Vulnerability Description

ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In version 1.5.2-beta3, users are restricted from deleting internal system files or folders through the application interface. However, when interacting directly with the API, these restrictions can be bypassed. By altering the path parameter in the delete request, internal OS files and directories can be removed successfully. The backend processes these manipulated requests without validating whether the targeted path belongs to restricted system locations. This demonstrates improper input validation and broken access control on sensitive filesystem operations. No known public patch is available.

CVSS Score

8.5

HIGH

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

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Zimaspace	Zimaos	1.5.2

Related Weaknesses (CWE)

CWE-73

References

https://github.com/IceWhaleTech/ZimaOS/security/advisories/GHSA-q5hp-59wm-9xq3ExploitMitigationVendor Advisory
https://github.com/IceWhaleTech/ZimaOS/security/advisories/GHSA-q5hp-59wm-9xq3ExploitMitigationVendor Advisory

FAQ

What is CVE-2026-28442?

CVE-2026-28442 is a vulnerability with a CVSS score of 8.5 (HIGH). ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In version 1.5.2-beta3, users are restricted from deleting internal system files or folders through the a...

How severe is CVE-2026-28442?

CVE-2026-28442 has been rated HIGH with a CVSS base score of 8.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-28442?

Check the references section above for vendor advisories and patch information. Affected products include: Zimaspace Zimaos.