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CVE-2026-57206

8.6 · HIGH

SimpleChat is a secure AI conversation application with personal and group workspaces for document-grounded interactions.

Published Jul 16, 2026CWE-306EPSS 0.96%

Overview

CVE-2026-57206 is a high-severity vulnerability. It was published on July 16, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.6, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

SimpleChat is a secure AI conversation application with personal and group workspaces for document-grounded interactions. Prior to 0.241.206, several plugin validation routes in application/single_app/plugin_validation_endpoint.py, including `POST /api/admin/plugins/test-instantiation`, `GET /api/admin/plugins/health-check/<plugin_name>`, `POST /api/admin/plugins/repair/<plugin_name>`, and `POST /api/plugins/validate`, relied on @swagger_route(security=get_auth_security()) documentation without enforcing @login_required, @user_required, or @admin_required at runtime, allowing unauthenticated or unauthorized clients to invoke plugin validation, health, and repair behavior. This issue is fixed in version 0.241.206.

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/microsoft/simplechat/blob/main/docs/explanation/fixes/PLUGIN_VALIDATION_ROUTE_AUTH_FIX.mdGitHubgithub.com/microsoft/simplechat/releases/tag/v0.250.001GitHubgithub.com/microsoft/simplechat/security/advisories/GHSA-g6gr-xp46-hrmj

How CyberStrike helps

Frequently asked questions

What is CVE-2026-57206?

CVE-2026-57206 is a high-severity vulnerability. It was published on July 16, 2026 and has a CVSS 3.1 base score of 8.6 (HIGH).

How severe is CVE-2026-57206?

This vulnerability has a CVSS 3.1 base score of 8.6, 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-2026-57206?

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-2026-57206?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-57206 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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