CVE-2026-105859 Payload: Unauthorized update to collection documents

What is CVE-2026-105859?

CVE-2026-105859 is a critical missing authorization vulnerability in payloadcms payload, published on 6 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official 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 attacker can submit a request to a specific update endpoint that modifies collection documents without enforcing collection or field-level access control when orderable is enabled on a collection or join field. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.

Weakness: CWE-862, CWE-639

Which versions are affected by CVE-2026-105859?

4 open source packages ship an affected version, including payload. It affects 1 product.

Products include Payloadcms Payload.

How do I fix CVE-2026-105859?

Upgrade payload to a fixed version for your release line: 3.90.0 or 4.0.0-canary.34.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-105859 being exploited?

There is no known exploitation of CVE-2026-105859 in the wild and no public exploit code.

Other vulnerabilities in payloadcms payload

• CVE-2026-105857 Payload: RCE in Payload Form Builder Critical 10.0
• CVE-2026-25544 Payload has an SQL Injection in JSON/RichText Queries on PostgreSQL/SQLite Adapters Critical 9.8
• CVE-2022-27952 Unrestricted Upload of File with Dangerous Type in Payload Critical 9.8
• CVE-2026-105851 Payload: Field access control bypass on auth collections Critical 9.3
• CVE-2026-105863 Payload authentication token field handling issue Critical 9.2

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-f7hx-52q9-hcrf.