CVE-2026-28798

10.0 criticalEPSS 0.4%

Critical (10.0) in zimaspace zimaos. EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

10.0 critical

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

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 33% of CVEs (scores of 2026-10-31)
CWE: CWE-918
Published: 2026-04-03
Modified: 2026-07-24
Record from: the NVD, synced 2026-10-19

Affected

zimaspace:zimaos

References

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

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