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.
History

Thu, 15 Oct 2026 00:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:payloadcms:payload:*:*:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary0:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary10:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary11:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary12:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary13:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary14:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary15:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary16:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary17:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary18:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary19:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary1:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary20:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary21:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary22:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary23:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary24:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary25:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary26:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary27:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary28:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary29:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary2:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary30:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary31:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary32:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary33:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary3:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary4:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary5:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary6:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary7:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary8:*:*:*:node.js:*:*
cpe:2.3:a:payloadcms:payload:4.0.0:canary9:*:*:*:node.js:*:*
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N'}


Fri, 09 Oct 2026 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Payloadcms
Payloadcms payload
Payloadcms storage-s3
Vendors & Products Payloadcms
Payloadcms payload
Payloadcms storage-s3

Tue, 06 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 06 Oct 2026 17:00:00 +0000

Type Values Removed Values Added
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.
Title Payload: Client uploads could overwrite S3 objects
Weaknesses CWE-639
References
Metrics cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-10-06T16:49:12.532Z

Updated: 2026-10-06T17:24:39.913Z

Reserved: 2026-10-05T23:06:29.748Z

Link: CVE-2026-105867

cve-icon Vulnrichment

Updated: 2026-10-06T17:24:35.692Z

cve-icon NVD

Status : Analyzed

Published: 2026-10-06T17:17:23.137

Modified: 2026-10-15T00:07:52.077

Link: CVE-2026-105867

cve-icon Redhat

No data.