{"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":9.2,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","cwe":["CWE-290","CWE-915"],"vendor":"payloadcms","product":"payload","affected":["payload >= 3.0.0, < 3.90.0","payload >= 4.0.0-canary.0, < 4.0.0-canary.34"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T17:17:22.570","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"}],"tags":["nvd","cve.org"],"cvssSource":"cna","ingestedAt":"2026-10-06T17:09:22.194Z","slug":"CVE-2026-105863","body":"## Overview\n\nPayload 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":51,"depthScoreParts":{"impact":50.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}