Is this vulnerability remotely exploitable over the Internet?

Yes. When ZimaOS is exposed via a Cloudflare Tunnel or similar mechanism, remote attackers can exploit the proxy endpoint over the Internet without prior access, as long as they can reach the `/v1/sys/proxy` path.

Does an attacker need valid credentials to exploit this issue?

No. The described behavior allows unauthenticated use of the proxy endpoint, so exploitation does not require a user account or session on the system.

What is the safest general fix pattern for this kind of vulnerability?

The most robust fix pattern is to limit proxy endpoints to a clearly defined set of external destinations using allow-lists, and to explicitly deny requests to loopback, link-local, and private network ranges, while also restricting protocols and ports.

Severity:

CRITICAL RISK

(9.0)

Server-Side Request Forgery (CWE-918) in ZimaOS Proxy Endpoint

CVE-2026-28798

Published:

Apr 3, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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May 10, 2026

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Unauthenticated Access to Internal Services and Potential Lateral Movement

Severity:

CRITICAL RISK

(9.0)

CVSS Version:

3.1

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Unauthenticated Access to Internal Services and Potential Lateral Movement

Severity:

CRITICAL RISK

(9.0)

CVSS Version:

3.1

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Server-Side Request Forgery (CWE-918) in ZimaOS Proxy Endpoint

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(8.8)

PHP Code Injection via File Upload (CWE-94) in Aero CMS Admin Post Creation

HIGH RISK

HIGH

(8.8)

Code Injection (CWE-94) via Module Parameters in Evolution CMS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

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