CVE-2026-105866: Payloadcms Payload

Medium severity, CVSS 6.9. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Payloadcms Payload: before 3.90.0 (fixed in 3.90.0); from 4.0.0-canary.0, before 4.0.0-canary.34 (fixed in 4.0.0-canary.34)

Published 2026-10-06. Last modified 2026-10-06.