Vulnerability Details 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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 17.1%
CVSS Severity
CVSS v3 Score 9.0
References
Products affected by CVE-2026-28798
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cpe:2.3:o:zimaspace:zimaos:-
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cpe:2.3:o:zimaspace:zimaos:0.4.8
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cpe:2.3:o:zimaspace:zimaos:0.4.8.1
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cpe:2.3:o:zimaspace:zimaos:0.4.9
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cpe:2.3:o:zimaspace:zimaos:0.4.9.1
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cpe:2.3:o:zimaspace:zimaos:0.4.9.2
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cpe:2.3:o:zimaspace:zimaos:0.4.9.3
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cpe:2.3:o:zimaspace:zimaos:0.4.9.4
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cpe:2.3:o:zimaspace:zimaos:0.5.0
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cpe:2.3:o:zimaspace:zimaos:1.0.0
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cpe:2.3:o:zimaspace:zimaos:1.1.0
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cpe:2.3:o:zimaspace:zimaos:1.2.2
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cpe:2.3:o:zimaspace:zimaos:1.2.3
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cpe:2.3:o:zimaspace:zimaos:1.2.4
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cpe:2.3:o:zimaspace:zimaos:1.2.5
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cpe:2.3:o:zimaspace:zimaos:1.3.0
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cpe:2.3:o:zimaspace:zimaos:1.3.0-1
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cpe:2.3:o:zimaspace:zimaos:1.3.0-2
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cpe:2.3:o:zimaspace:zimaos:1.3.1
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cpe:2.3:o:zimaspace:zimaos:1.3.1-1
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cpe:2.3:o:zimaspace:zimaos:1.3.2
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cpe:2.3:o:zimaspace:zimaos:1.3.2-1
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cpe:2.3:o:zimaspace:zimaos:1.3.3
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cpe:2.3:o:zimaspace:zimaos:1.4.0
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cpe:2.3:o:zimaspace:zimaos:1.4.1
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cpe:2.3:o:zimaspace:zimaos:1.4.2
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cpe:2.3:o:zimaspace:zimaos:1.4.3
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cpe:2.3:o:zimaspace:zimaos:1.4.4
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cpe:2.3:o:zimaspace:zimaos:1.4.4-1
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cpe:2.3:o:zimaspace:zimaos:1.5.0