High 7.1Published Oct 6, 2026

CVE-2026-105867Payload: Client uploads could overwrite S3 objects

Updated under an hour ago (2026-10-19 08:23 UTC)

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It affects payloadcms payload and 1 other product. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.22%, higher than 12% of scored CVEs.

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Every CVE for payloadcms payload

Exploited in the last 30 days

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.

CVSS: 7.1 HIGH (v4.0, CNA)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
Weakness (CWE): CWE-639
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.22% (percentile 12)
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Oct 6, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

payloadcms payload payloadcms:payload (from the name)	before 3.90.0; from 4.0.0-canary.0, < 4.0.0-canary.34	CNA record
@payloadcms storage-s3 payloadcms:storage_s3 (from the name)	before 3.90.0; from 4.0.0-canary.0, < 4.0.0-canary.34	CNA record
payloadcms payload payloadcms:payload	before 3.90.0; 4.0.0; 4.0.0; 4.0.0; 4.0.0; 4.0.0; 4.0.0; 4.0.0; and 27 more ranges	NVD

References

https://github.com/payloadcms/payload/security/advisories/GHSA-7vg8-29qx-jgj8x-refsource-confirm, vendor-advisory
https://github.com/payloadcms/payload/commit/2df8238fbf17edfce335c399b90bf524ba9906a2x-refsource-misc, patch
https://github.com/payloadcms/payload/releases/tag/v3.90.0x-refsource-misc, patch, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.