{"id":"CVE-2026-105863","aliases":["EUVD-2026-93509","GHSA-66wr-7vmr-p5jq"],"status":"published","title":"Payload authentication token field handling issue","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.","severity":{"version":"4.0","score":9.2,"vector":"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","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00549,"percentile":0.46467,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-290","CWE-915"],"published":"2026-10-06T16:39:44Z","modified":"2026-10-28T02:30:28Z","fixes":[{"ecosystem":"npm","package":"payload","fixed_in":["3.90.0","4.0.0-canary.34"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"payload","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"3.90.0"}]}]},{"source":"ghsa","ecosystem":"npm","package":"payload","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0-canary.0"},{"fixed":"4.0.0-canary.34"}]}]},{"source":"osv","ecosystem":"npm","package":"payload","ranges":[{"type":"SEMVER","events":[{"introduced":"3.0.0"},{"fixed":"3.90.0"}]}]},{"source":"osv","ecosystem":"npm","package":"payload","ranges":[{"type":"SEMVER","events":[{"introduced":"4.0.0-canary.0"},{"fixed":"4.0.0-canary.34"}]}]}],"products":[{"vendor":"payloadcms","product":"payload"}],"references":[{"url":"https://github.com/payloadcms/payload/security/advisories/GHSA-66wr-7vmr-p5jq","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory","web"]},{"url":"https://github.com/payloadcms/payload/commit/56cd5cd050a57daebf33159e41e5ff9d4a45239c","tags":["x_refsource_MISC","Patch","fix","web"]},{"url":"https://github.com/payloadcms/payload/releases/tag/v3.90.0","tags":["x_refsource_MISC","Patch","Release Notes","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105863","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-66wr-7vmr-p5jq"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/105xxx/CVE-2026-105863.json","tags":["advisory"]},{"url":"https://github.com/payloadcms/payload","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-105863","title":"Payload authentication token field handling issue","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.","status":"published","published":"2026-10-06T16:39:44.912Z","modified":"2026-10-09T01:15:33.512Z","cvss":[{"version":"4.0","score":9.2,"vector":"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","level":"critical","assessor":"cna"}],"cwes":["CWE-290","CWE-915"],"updated_at":"2026-11-02T14:19:56.755658Z"}],"euvd":[{"id":"EUVD-2026-93509","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.","status":"published","published":"2026-10-06T16:39:44Z","modified":"2026-10-09T01:15:33Z","cvss":[{"version":"4.0","score":9.2,"vector":"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","level":"critical"}],"updated_at":"2026-11-02T17:27:25.942984Z"}],"ghsa":[{"id":"GHSA-66wr-7vmr-p5jq","title":"Payload authentication token field handling issue","description":"### 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 `\u003e= 3.90.0` or `\u003e= 4.0.0-canary.34`.\n\n### Workarounds\nThere is no complete workaround. Users should upgrade payload packages to `\u003e= 3.90.0` or `\u003e= 4.0.0-canary.34`.","status":"published","published":"2026-10-07T20:28:18Z","modified":"2026-10-07T20:28:19Z","cvss":[{"version":"4.0","score":9.2,"vector":"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","level":"critical"}],"cwes":["CWE-290","CWE-915"],"updated_at":"2026-11-02T14:41:29.107536Z"}],"nvd":[{"id":"CVE-2026-105863","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.","status":"published","published":"2026-10-06T17:17:22.57Z","modified":"2026-10-15T00:09:08.31Z","cvss":[{"version":"4.0","score":9.2,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L","level":"critical","assessor":"primary"}],"cwes":["CWE-290","CWE-915"],"updated_at":"2026-11-02T14:12:54.486849Z"}],"osv":[{"id":"CVE-2026-105863","title":"Payload authentication token field handling issue","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.","status":"published","published":"2026-10-06T16:39:44.912Z","modified":"2026-10-28T02:30:28.371043438Z","cvss":[{"version":"4.0","score":9.2,"vector":"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","level":"critical"}],"cwes":["CWE-290","CWE-915"],"updated_at":"2026-11-02T15:44:54.583213Z"},{"id":"GHSA-66wr-7vmr-p5jq","title":"Payload authentication token field handling issue","description":"### 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 `\u003e= 3.90.0` or `\u003e= 4.0.0-canary.34`.\n\n### Workarounds\nThere is no complete workaround. Users should upgrade payload packages to `\u003e= 3.90.0` or `\u003e= 4.0.0-canary.34`.","status":"published","published":"2026-10-07T20:28:18Z","modified":"2026-10-07T20:45:05.34196146Z","cvss":[{"version":"4.0","score":9.2,"vector":"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","level":"critical"}],"cwes":["CWE-290","CWE-915"],"updated_at":"2026-11-02T15:46:39.266402Z"}]}}