Description
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.
Published: 2026-04-03
Score: 9.1 Critical
EPSS: < 1% Very Low
KEV: No
Impact: Unauthenticated internal service access on local services via proxy
Action: Patch Now
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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History

Mon, 13 Apr 2026 18:30:00 +0000

Type Values Removed Values Added
First Time appeared Zimaspace
Zimaspace zimaos
CPEs cpe:2.3:o:zimaspace:zimaos:*:*:*:*:*:*:*:*
Vendors & Products Zimaspace
Zimaspace zimaos

Tue, 07 Apr 2026 00:00:00 +0000

Type Values Removed Values Added
First Time appeared Icewhaletech
Icewhaletech zimaos
Vendors & Products Icewhaletech
Icewhaletech zimaos

Mon, 06 Apr 2026 16:45:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 03 Apr 2026 20:15:00 +0000

Type Values Removed Values Added
Description 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.
Title Arbitrary internal service access via /v1/sys/proxy when Cloudflare Tunnel is enabled on ZimaOS
Weaknesses CWE-918
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H'}


Subscriptions

Icewhaletech Zimaos
Zimaspace Zimaos
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-04-06T15:42:48.777Z

Reserved: 2026-03-03T14:25:19.245Z

Link: CVE-2026-28798

cve-icon Vulnrichment

Updated: 2026-04-06T15:40:12.501Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-03T20:16:02.433

Modified: 2026-04-13T18:27:54.580

Link: CVE-2026-28798

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-14T16:41:49Z

Weaknesses