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CVE-2026-105866

7.5 · HIGH

Payload is a free and open source headless content management system.

Published Oct 6, 2026payloadcmsCWE-307EPSS 0.37%

Overview

CVE-2026-105866 is a high-severity vulnerability affecting payloadcms payload. It was published on October 6, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Payload is a free and open source headless content management system. In versions before 3.90.0 and canary versions before 4.0.0-canary.34, an unauthenticated attacker who knows an account email address or username can abuse the account lockout mechanism of a local-authentication collection to prevent that account from signing in. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.

Remediation

Check the references section for vendor advisories and patches from payloadcms. Update payload to the latest patched version. 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.

Affected products

VendorProductVersionsStatus
payloadcmspayload>= 0, < 3.90.0Affected

References

GitHubgithub.com/payloadcms/payload/commit/1c46204a73a0a9f988a80c52690eee5a4ada3cf1GitHubgithub.com/payloadcms/payload/releases/tag/v3.90.0GitHubgithub.com/payloadcms/payload/security/advisories/GHSA-v5gf-vpjc-pc7w

How CyberStrike helps

Frequently asked questions

What is CVE-2026-105866?

CVE-2026-105866 is a high-severity vulnerability affecting payloadcms payload. It was published on October 6, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-105866?

This vulnerability has a CVSS 3.1 base score of 7.5, 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-2026-105866?

Check the references section for vendor advisories and patches from payloadcms. Update payload to the latest patched version. 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-2026-105866?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-105866 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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