Critical severity9.0NVD Advisory· Published Apr 3, 2026· Updated Apr 13, 2026
CVE-2026-28798
CVE-2026-28798
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.
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Affected products
2- Range: <1.5.3
Patches
Vulnerability mechanics
References
2- github.com/IceWhaleTech/ZimaOS/security/advisories/GHSA-vqqj-f979-8c8mnvdExploitVendor Advisory
- github.com/IceWhaleTech/ZimaOS/releases/tag/1.5.3nvdProductRelease Notes
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