---
id: CVE-2026-105867
title: Payload is a free and open source headless content management system
summary: >-
  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 ano…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-639
vendor: payloadcms
product: payload
affected:
  - payload < 3.90.0
  - payload = 4.0.0
patched:
  - payload 3.90.0
published: '2026-10-06'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T00:07:52.077'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-105867'
references:
  - url: >-
      https://github.com/payloadcms/payload/commit/2df8238fbf17edfce335c399b90bf524ba9906a2
    label: security-advisories@github.com
  - url: 'https://github.com/payloadcms/payload/releases/tag/v3.90.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/payloadcms/payload/security/advisories/GHSA-7vg8-29qx-jgj8
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-105867'
  - url: 'https://github.com/advisories/GHSA-7vg8-29qx-jgj8'
tags:
  - nvd
  - cve.org
  - ghsa
  - npm
epss: 0.0022
epssPercentile: 0.12475
aliases:
  - GHSA-7vg8-29qx-jgj8
ecosystem: npm
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-06T17:24:30.442506Z'
scores:
  nvd: 6.5
  cna: 7.1
ingestedAt: '2026-10-06T17:09:22.189Z'
---

## Overview

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.

## Affected

- `payload < 3.90.0`
- `payload = 4.0.0`

## Remediation

Upgrade past the affected range:

- `payload 3.90.0`

## Package advisory (CVE-2026-105867)

Affected packages:

- `@payloadcms/storage-s3 < 3.90.0`
- `@payloadcms/storage-s3 >= 4.0.0-canary.0, < 4.0.0-canary.34`

Patched in:

- `@payloadcms/storage-s3 3.90.0`
- `@payloadcms/storage-s3 4.0.0-canary.34`

Source: https://github.com/advisories/GHSA-7vg8-29qx-jgj8