{"id":"CVE-2026-105858","aliases":["GHSA-97rh-rhh2-7vjv"],"url":"https://o3.security/vulnerability/CVE-2026-105858","summary":"Payload: Remote Code Execution through first-register","details":"### Impact\nA crafted request to the public first-register operation can be used to perform a RCE exploit.\n\n**You are affected if:**\n\n- You use local auth strategy and your application remains without an initial user created\n\n## Patches\n\nIn the patched version data submission to create first user is properly sanitized.\n\nUsers should upgrade Payload packages to `>= 3.90.0` or `>= 4.0.0-canary.34`.","published":"2026-10-06T16:29:52.420Z","modified":"2026-10-21T02:54:34.587243581Z","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"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/e947fc4ba4a434f276d043386e501b1d14eda679","label":"payloadcms/payload@e947fc4"},"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-2026-105858.json"},{"type":"ADVISORY","url":"https://github.com/payloadcms/payload/security/advisories/GHSA-97rh-rhh2-7vjv"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105858"},{"type":"FIX","url":"https://github.com/payloadcms/payload/commit/e947fc4ba4a434f276d043386e501b1d14eda679"},{"type":"PACKAGE","url":"https://github.com/payloadcms/payload"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-21T02:54:34.587243581Z"}}