vulnerability · Wed 07 Oct 2026 · 20:28 UTC
GHSA-7vg8-29qx-jgj8: Payload: Client uploads could overwrite S3 objects
Filed UTCSource GTH ↗
An authenticated user could overwrite an existing S3 object belonging to another upload collection, bypassing that collection’s access controls and prior file validation. You are affected if ALL of these are true: - Client uploads are enabled for multiple collections that share an S3 bucket. - useCompositePrefixes is not configured or is set to false. ### Patches Users should upgrade Payload packages to >= 3.90.0 or >= 4.0.0-canary.34. ### Workarounds Disable client uploads until you can upgrade.
Signals
as the pipeline stamped them- High
- High-risk vulnerability
CVE
KEV from CISA · EPSS from FIRST| Id | KEV | EPSS | Reference |
|---|---|---|---|
| CVE-2026-105867 | — | 0.22% | NVD ↗ |
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