Is this vulnerability remotely exploitable?

Yes. An attacker who can access the /api/public/stream endpoint over the network can potentially exploit the SSRF by supplying a crafted public URL that redirects to internal services.

Does this require authenticated access?

It depends on how the endpoint is exposed in a given deployment. If /api/public/stream is publicly accessible or available to low-privilege users, then no special authentication is needed beyond that baseline access.

What is the safest general fix pattern?

The strongest pattern is to avoid accepting arbitrary user-controlled URLs for server-side fetching. Where this is necessary, apply strict allowlists and validate every redirect target (host, IP, and scheme) before issuing or following requests, and consider disabling automatic redirects.

Severity:

HIGH RISK

(8.2)

SSRF via Unvalidated Redirects (CWE-918) in Postiz /api/public/stream Endpoint

CVE-2026-40168

Published:

Apr 10, 2026

Status:

Received

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI Handler setAccessDeviceCfg

Remote Code Execution on the Router

April 12, 2026

CWE-77;CWE-78

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI setLedCfg Handler

Remote Code Execution on the Router

April 12, 2026

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Unauthorized Access to Internal Resources

Severity:

HIGH RISK

(8.2)

CVSS Version:

3.1

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Unauthorized Access to Internal Resources

Severity:

HIGH RISK

(8.2)

CVSS Version:

3.1

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Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

SSRF via Unvalidated Redirects (CWE-918) in Postiz /api/public/stream 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

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI Handler setAccessDeviceCfg

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI setLedCfg Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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