CVE-2026-28798Arbitrary internal service access via /v1/sys/proxy when Cloudflare Tunnel is enabled on ZimaOS
Updated under an hour ago ()
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It affects IceWhaleTech ZimaOS and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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Free account, 1 product
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
- 9.1 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-918
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Apr 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
IceWhaleTech ZimaOS icewhaletech:zimaos (from the name) | before 1.5.3 | CNA record |
zimaspace zimaos zimaspace:zimaos | before 1.5.3 | NVD |
References
- https://github.com/IceWhaleTech/ZimaOS/security/advisories/GHSA-vqqj-f979-8c8mx-refsource-confirm, exploit, vendor-advisory
- https://github.com/IceWhaleTech/ZimaOS/releases/tag/1.5.3x-refsource-misc, product, release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.