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    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.

    Published:Apr 3, 2026
    Last Modified:Apr 14, 2026
    EPS:Apr 3, 2026
    EPSS Score:0.00054
    CVSS Score:9.1

    Affected Products

    Vendor
    Icewhaletech
    Product
    Zimaos
    Vendor
    Zimaspace
    Product
    Zimaos

    Exploits

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

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-664 Server Side Request Forgery

    Related CVEs

    CVE-2026-28442 (CVSS 8.5) — ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In version 1.5.…
    CVE-2025-64427 (CVSS 7.1) — ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In version 1.5.…
    CVE-2026-28286 (CVSS 8.5) — ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In version 1.5.…
    CVE-2026-21891 (CVSS 9.4) — ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In versions up …
    CVE-2025-58432 (CVSS 5.2) — ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In version 1.4.…
    CVE-2025-58431 (CVSS 4.8) — ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In version 1.4.…
    CVE-2024-49359 (CVSS 7.5) — ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In version 1.2.…
    CVE-2024-49358 (CVSS 5.3) — ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In version 1.2.…
    CVE-2024-49357 (CVSS 7.5) — ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In version 1.2.…
    CVE-2024-48932 (CVSS 5.3) — ZimaOS is a fork of CasaOS, an operating system for Zima devices and x86-64 systems with UEFI. In versions bel…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High