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Vulnerability record · CVE-2026-28798 · published 3 April 2026

CVE-2026-28798: Zimaspace zimaos server-side request forgery (ssrf) vulnerability

Zimaspace · Zimaos

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.

10.0 CVSS 3.1 Critical EPSS 0.53% · top 57.3% CWE-918 · Server-side request forgery (SSRF)
10.0CVSS 3.1 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 1 tagged exploit
24 Jul 2026Last modified by NVD

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/IceWhaleTech/ZimaOS/releases/tag/1.5.3 ProductRelease Notes
https://github.com/IceWhaleTech/ZimaOS/security/advisories/GHSA-vqqj-f979-8c8m ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-28798), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.