CVE-2026-105866
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductPayload
PublishedOct 6, 2026
First seenOct 6, 2026
Weakness typeCWE-307CWE-307CWE-645CWE-645
How to fix
Update
- payloadcms payload3.90.0 or later
- payload3.90.0, 4.0.0-canary.34 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| payloadcms payload | v < 3.90.0, 4.0.0 | 3.90.0 |
| payloadnpm | v < 3.90.0, 4.0.0-canary.0 ≤ v < 4.0.0-canary.34 | 3.90.0, 4.0.0-canary.34 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.