---
id: CVE-2026-105863
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
  versions after 3.0.0 and before 3.90.0, a custom field option that maps a
  field to a reserved authentication claim name can place unintended values in
  the authentic…
severity: critical
cvss: 9.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L'
cwe:
  - CWE-290
  - CWE-915
vendor: payloadcms
product: payload
affected:
  - 'payload >= 3.0.0, < 3.90.0'
  - payload = 4.0.0
patched:
  - payload 3.90.0
published: '2026-10-06'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T00:09:08.310'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-105863'
references:
  - url: >-
      https://github.com/payloadcms/payload/commit/56cd5cd050a57daebf33159e41e5ff9d4a45239c
    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-66wr-7vmr-p5jq
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-105863'
  - url: 'https://github.com/advisories/GHSA-66wr-7vmr-p5jq'
tags:
  - nvd
  - cve.org
  - ghsa
  - npm
  - exploit-available
epss: 0.00376
epssPercentile: 0.31802
aliases:
  - GHSA-66wr-7vmr-p5jq
ecosystem: npm
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-10-09T01:15:22.805238Z'
scores:
  nvd: 9.4
  cna: 9.2
ingestedAt: '2026-10-06T17:09:22.194Z'
exploits:
  github: 1
  githubRepos:
    - 'https://github.com/lelaboratoiredegenie/CVE-2026-105863'
  checkedAt: '2026-11-05T15:29:08.777Z'
exploitAvailable: true
---

## Overview

Payload is a free and open source headless content management system. In versions after 3.0.0 and before 3.90.0, a custom field option that maps a field to a reserved authentication claim name can place unintended values in the authentication token issued at login. This issue is fixed in version 3.90.0.

## Affected

- `payload >= 3.0.0, < 3.90.0`
- `payload = 4.0.0`

## Remediation

Upgrade past the affected range:

- `payload 3.90.0`

## Package advisory (CVE-2026-105863)

Affected packages:

- `payload >= 3.0.0, < 3.90.0`
- `payload >= 4.0.0-canary.0, < 4.0.0-canary.34`

Patched in:

- `payload 3.90.0`
- `payload 4.0.0-canary.34`

Source: https://github.com/advisories/GHSA-66wr-7vmr-p5jq