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[ CVE-2026-105863 · Published 6 Oct 2026 ]

Payload authentication token field handling issue

CVSS 9.4 EPSS <1%Fix available

[ Why it matters ]Priority signals

  • Critical severity: CVSS 9.4

[ Description ]Official description

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.

[ Fixes ]Fixes and patches

  • payload 3.90.0Fixed version · GitHub Advisories · npm package payload: upgrade to 3.90.0 or later (affected >= 3.0.0, < 3.90.0)
  • payload 4.0.0-canary.34Fixed version · GitHub Advisories · npm package payload: upgrade to 4.0.0-canary.34 or later (affected >= 4.0.0-canary.0, < 4.0.0-canary.34)
  • Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD
  • Patch on github.comVendor patch or bulletin · NVD · Reference tagged 'Patch' by NVD

[ Packages ]Affected open-source packages

  • payload npmAffected >= 3.0.0, < 3.90.0 · fixed in 3.90.0 · GHSA-66wr-7vmr-p5jq
  • payload npmAffected >= 4.0.0-canary.0, < 4.0.0-canary.34 · fixed in 4.0.0-canary.34 · GHSA-66wr-7vmr-p5jq

[ References ]References