CVE-2026-105859: Payload is a free and open source headless content management system

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2026-105859 is a critical-severity flaw (CVSS 9.8) affecting payload. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 72%)
CISA exploited list	No
Weakness	CWE-639, CWE-862
Published	2026-10-06
Last modified	2026-10-15

Publisher (CNA): GitHub, Inc. · Vendor: payloadcms

Last updated 2026-10-15 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-10-06 17:17 UTCPublished CVE record published
2026-10-15 00:10 UTCUpdated Record last modified

payloadcms payload UPGRADE

Affected: < 3.90.0 · 4.0.0 canary0 · 4.0.0 canary1 · 4.0.0 canary10 · 4.0.0 canary11 · 4.0.0 canary12 · 4.0.0 canary13 · 4.0.0 canary14

Fixed in: 3.90.0

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls payload

2. UPGRADE to 3.90.0

npm install payload@">=3.90.0"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-105859?

payload: upgrade to 3.90.0. Exact commands for each OS are on this page.

Is CVE-2026-105859 being exploited?

CVE-2026-105859 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-105859 affect?

CVE-2026-105859 affects payload. Severity is critical (CVSS 9.8). 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 wi

How urgent is CVE-2026-105859?

Priority 46/100. Critical severity; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-34750 MEDIUM 6.5 UPGRADE Payload is a free and open source headless content management system
CVE-2026-105846 MEDIUM 6.1 UPGRADE Payload is a free and open source headless content management system
CVE-2026-105847 MEDIUM 6.5 UPGRADE Payload is a free and open source headless content management system
CVE-2026-105868 HIGH 7.1 UPGRADE Payload is a free and open source headless content management system
CVE-2026-105848 CRITICAL 9.6 UPGRADE Payload is a free and open source headless content management system

References

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