Read the docs
TI-2026-22992 Aliases CVE-2026-28798

Arbitrary internal service access via /v1/sys/proxy when Cloudflare Tunnel is enabled on ZimaOS

Priority MEDIUM 43CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. Prior to version 1.5.3, a proxy endpoint (/v1/sys/proxy) exposed by ZimaOS's web interface can be abused (via an externally reachable domain using a Cloudflare Tunnel) to make requests to internal localhost services. This results in unauthenticated access to internal-only endpoints and sensitive local services when the product is reachable from the Internet through a Cloudflare Tunnel. This issue has been patched in version 1.5.3.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00394 33rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed ZimaOS (IceWhaleTech): 1.5.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
IceWhaleTechZimaOSbefore 1.5.31.5.3Patch availableCNA
  • ZimaOS VendorIceWhaleTech Affected before 1.5.3 Fixed in 1.5.3 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:o:zimaspace:zimaos:*:*:*:*:*:*:*:*before 1.5.3VulnerableZimaspace
  • cpe:2.3:o:zimaspace:zimaos:*:*:*:*:*:*:*:* Versions before 1.5.3 Vulnerable ·Zimaspace

Remediation

  • Fix · CNA ZimaOS (IceWhaleTech) Fixed in 1.5.3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-28798

References

Exploit 1

Other 1

  • TI-2026-17591 ZimaOS has Authentication Bypass via System-Level Username CVSS 3.1CRITICAL 9.8
  • TI-2024-16284 CasaOS Improper Restriction of Excessive Authentication Attempts vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2024-16282 CasaOS-UserService allows unauthorized access to any file CVSS 3.1CRITICAL 9.8
  • TI-2024-32947 ZimaOS vulnerable to Directory Listing via Parameter Manipulation CVSS 3.1HIGH 7.5
  • TI-2024-32626 ZimaOS Arbitrary File Read via Parameter Manipulation CVSS 3.1HIGH 7.5
  • TI-2023-19077 CasaOS Command Injection vulnerability CVSS 3.1HIGH 8.8
See all 20 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences