PT-2026-30213 · Zimaos+1 · Zimaos+1

Drdark1999 · Published 2026-04-03 · Updated 2026-04-04 · CVE-2026-28798

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions ZimaOS versions prior to 1.5.3

Description ZimaOS, a fork of CasaOS, has an issue where the /v1/sys/proxy API endpoint, exposed through its web interface, can be exploited to make requests to internal localhost services. This allows unauthenticated access to internal-only endpoints and sensitive local services when the system is accessible from the internet via a Cloudflare Tunnel. The vulnerable endpoint is /v1/sys/proxy.

Recommendations Update to version 1.5.3 or later.

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2026-28798

Affected Products

Casaos

Zimaos

References · 7

• https://github.com/IceWhaleTech/ZimaOS/security/advisories/GHSA-vqqj-f979-8c8m · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-28798 · Security Note
• https://github.com/IceWhaleTech/ZimaOS/releases/tag/1.5.3 · Note
• https://twitter.com/CveFindCom/status/2040168192673276149 · Twitter Post
• https://twitter.com/0dayPublishing/status/2040159777259508128 · Twitter Post
• https://twitter.com/UndercodeUpdate/status/2040281389069660234 · Twitter Post
• https://twitter.com/TheHackerWire/status/2040323434086089073 · Twitter Post