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CVE-2026-105867 Details

Description

Payload is a free and open source headless content management system. In @payloadcms/storage-s3 versions before 3.90.0 and canary versions before 4.0.0-canary.34, an authenticated user can overwrite an existing S3 object belonging to another upload collection when client uploads are enabled for multiple collections sharing a bucket and useCompositePrefixes is false or unset. This bypasses the target collection's access controls and prior file validation. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/payloadcms/payload/commit/2df8238fbf17edfce335c399b90bf524ba9906a2	[email protected]
https://github.com/payloadcms/payload/releases/tag/v3.90.0	[email protected]
https://github.com/payloadcms/payload/security/advisories/GHSA-7vg8-29qx-jgj8	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-639	Authorization Bypass Through User-Controlled Key	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 6, 2026	CVE Modified	CISA-ADP
Oct 6, 2026	New CVE Received	[email protected]