CVE-2026-28798

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.

Score

CVSS 3.1 10.0 Critical

Status

Analyzed - security-advisories@github.com

Published

2026-04-03

Last modified

2026-04-06

Weaknesses

CWE-918

Affected products

• Zimaos (Icewhaletech)
• Zimaos (Zimaspace)

References

• https://github.com/IceWhaleTech/ZimaOS/releases/tag/1.5.3
• https://github.com/IceWhaleTech/ZimaOS/security/advisories/GHSA-vqqj-f979-8c8m