{"schema":"threatline.record/2","record":{"id":"CVE-2026-105863","aliases":["GHSA-66wr-7vmr-p5jq"],"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`.","categories":["Libraries & packages"],"product":"payload","vendor":"payloadcms","ecosystem":"npm","affected_ranges":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-66wr-7vmr-p5jq","source_modified_at":"2026-10-07T20:28:19Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"payload"},"range":">= 3.0.0, < 3.90.0"},{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-66wr-7vmr-p5jq","source_modified_at":"2026-10-07T20:28:19Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"payload"},"range":">= 4.0.0-canary.0, < 4.0.0-canary.34"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-105863","source_modified_at":"2026-10-09T01:15:33.512Z","fetched_at":"2026-10-23T18:45:31.882637Z","product":"payload","vendor":"payloadcms","versions":[{"version":">= 3.0.0, < 3.90.0","status":"affected"},{"version":">= 4.0.0-canary.0, < 4.0.0-canary.34","status":"affected"}],"defaultStatus":null},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-66wr-7vmr-p5jq","source_modified_at":"2026-10-07T20:45:05.341961460Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"payload","purl":"pkg:npm/payload"},"ranges":[{"events":[{"introduced":"3.0.0"},{"fixed":"3.90.0"}],"type":"SEMVER"}],"versions":[]},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-66wr-7vmr-p5jq","source_modified_at":"2026-10-07T20:45:05.341961460Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"payload","purl":"pkg:npm/payload"},"ranges":[{"events":[{"introduced":"4.0.0-canary.0"},{"fixed":"4.0.0-canary.34"}],"type":"SEMVER"}],"versions":[]}],"fixed_versions":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-66wr-7vmr-p5jq","source_modified_at":"2026-10-07T20:28:19Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"payload"},"version":"3.90.0"},{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-66wr-7vmr-p5jq","source_modified_at":"2026-10-07T20:28:19Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"payload"},"version":"4.0.0-canary.34"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-66wr-7vmr-p5jq","source_modified_at":"2026-10-07T20:45:05.341961460Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"payload","purl":"pkg:npm/payload"},"version":"3.90.0"},{"source":"OSV","source_url":"https://osv.dev/vulnerability/GHSA-66wr-7vmr-p5jq","source_modified_at":"2026-10-07T20:45:05.341961460Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"ecosystem":"npm","name":"payload","purl":"pkg:npm/payload"},"version":"4.0.0-canary.34"}],"cvss":9.2,"severity":"Critical","kev":{"listed":false},"epss":{"probability":0.00376,"percentile":0.30393,"score_date":"2026-10-23"},"published_at":"2026-10-06T16:39:44.912Z","modified_at":"2026-10-09T01:15:33.512Z","provenance":[{"source":"GitHub Advisory Database","url":"https://github.com/advisories/GHSA-66wr-7vmr-p5jq","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-07T20:28:19Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-105863","fetched_at":"2026-10-23T18:45:31.882637Z","source_modified_at":"2026-10-09T01:15:33.512Z"},{"source":"OSV","url":"https://osv.dev/vulnerability/GHSA-66wr-7vmr-p5jq","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-07T20:45:05.341961460Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-105863","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["GitHub Advisory Database","CVE List","OSV","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/payloadcms/payload/security/advisories/GHSA-66wr-7vmr-p5jq","tags":["x_refsource_CONFIRM"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105863","source":"GitHub Advisory Database"},{"source":"CVE List","url":"https://github.com/payloadcms/payload/commit/56cd5cd050a57daebf33159e41e5ff9d4a45239c","tags":["x_refsource_MISC"]},{"source":"CVE List","url":"https://github.com/payloadcms/payload/releases/tag/v3.90.0","tags":["x_refsource_MISC"]},{"url":"https://github.com/advisories/GHSA-66wr-7vmr-p5jq","source":"GitHub Advisory Database"}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","ssvc":{"exploitation":"none","automatable":"yes","technical_impact":"total","assessed_at":"2026-10-09T01:15:22.805238Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"ecosystem","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-09T01:15:33.512Z","content_hash":"0d4af8abdd2558911a7ab48aa2fc99067d083ced55d4fa2bde92af3a0cee43ab"}}