{"cve":"CVE-2026-105863","nvd":{"published":"2026-10-06T17:17:22.570","modified":"2026-10-15T00:09:08.310","status":"Analyzed","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.","cvss_v4":{"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","score":9.2},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L","score":9.4},"cwes":["CWE-290","CWE-915"],"references":["https://github.com/payloadcms/payload/commit/56cd5cd050a57daebf33159e41e5ff9d4a45239c","https://github.com/payloadcms/payload/releases/tag/v3.90.0","https://github.com/payloadcms/payload/security/advisories/GHSA-66wr-7vmr-p5jq"],"products":["payloadcms:payload"],"source":"nvd","synced_at":"2026-10-19T22:58:01.639778232+00:00"},"epss":{"cve":"CVE-2026-105863","score":0.00376,"percentile":0.31351,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-66wr-7vmr-p5jq","url":"https://osv.dev/vulnerability/GHSA-66wr-7vmr-p5jq","summary":"Payload authentication token field handling issue","modified":"2026-10-07T20:45:05.341961460Z","packages":[{"ecosystem":"npm","name":"payload","purl":"pkg:npm/payload","ranges":[">=3.0.0 <3.90.0"],"fixed":["3.90.0"]},{"ecosystem":"npm","name":"payload","purl":"pkg:npm/payload","ranges":[">=4.0.0-canary.0 <4.0.0-canary.34"],"fixed":["4.0.0-canary.34"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}