{"id":"CVE-2026-105863","aliases":["GHSA-66wr-7vmr-p5jq"],"url":"https://o3.security/vulnerability/CVE-2026-105863","summary":"Payload authentication token field handling issue","details":"### Impact\n\nUnder certain field configurations, Payload could include unintended values in the authentication token issued at login.\n\nYou are affected if:\n\n- You use an affected Payload version and have configured a custom field option that maps a field to a reserved authentication claim name.\n\n### Patches\nPayload now restricts which field configuration options can influence the contents of the authentication token.\n\nUsers should upgrade payload packages to `>= 3.90.0` or `>= 4.0.0-canary.34`.\n\n### Workarounds\nThere is no complete workaround. Users should upgrade payload packages to `>= 3.90.0` or `>= 4.0.0-canary.34`.","published":"2026-10-06T16:39:44.912Z","modified":"2026-10-21T02:54:34.995996699Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"payload","fixedVersion":"3.90.0"},{"ecosystem":"npm","name":"payload","fixedVersion":"4.0.0-canary.34"}],"fix":{"url":"https://github.com/payloadcms/payload/commit/56cd5cd050a57daebf33159e41e5ff9d4a45239c","label":"payloadcms/payload@56cd5cd"},"references":[{"type":"WEB","url":"https://github.com/payloadcms/payload/releases/tag/v3.90.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105863.json"},{"type":"ADVISORY","url":"https://github.com/payloadcms/payload/security/advisories/GHSA-66wr-7vmr-p5jq"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105863"},{"type":"FIX","url":"https://github.com/payloadcms/payload/commit/56cd5cd050a57daebf33159e41e5ff9d4a45239c"},{"type":"PACKAGE","url":"https://github.com/payloadcms/payload"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-21T02:54:34.995996699Z"}}