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CVE-2026-40168

8.2 · HIGH

Postiz is an AI social media scheduling tool.

Published Apr 10, 2026CWE-918EPSS 0.52%

Overview

CVE-2026-40168 is a high-severity vulnerability. It was published on April 10, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Postiz is an AI social media scheduling tool. Prior to 2.21.5, the /api/public/stream endpoint is vulnerable to SSRF. Although the application validates the initially supplied URL and blocks direct private/internal hosts, it does not re-validate the final destination after HTTP redirects. As a result, an attacker can supply a public HTTPS URL that passes validation and then redirects the server-side request to an internal resource.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/gitroomhq/postiz-app/commit/30e8b777098157362769226d1b46d83ad616cb06GitHubgithub.com/gitroomhq/postiz-app/releases/tag/v2.21.5GitHubgithub.com/gitroomhq/postiz-app/security/advisories/GHSA-34w8-5j2v-h6wwGitHubgithub.com/gitroomhq/postiz-app/security/advisories/GHSA-34w8-5j2v-h6ww

How CyberStrike helps

Frequently asked questions

What is CVE-2026-40168?

CVE-2026-40168 is a high-severity vulnerability. It was published on April 10, 2026 and has a CVSS 3.1 base score of 8.2 (HIGH).

How severe is CVE-2026-40168?

This vulnerability has a CVSS 3.1 base score of 8.2, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-40168?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-40168?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-40168 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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