{"id":"CVE-2026-106100","aliases":["GHSA-4ww4-68q3-h7g5"],"url":"https://o3.security/vulnerability/CVE-2026-106100","summary":"Payload: Field-level write access bypass in Payload on MongoDB","details":"### Impact\nA vulnerability in field-level access control could allow an authenticated user to modify fields they are not permitted to change on documents they can otherwise update.\n\nYou are affected if:\nPayload version < `3.87.0` (or a `4.0.0-canary` release before `4.0.0-canary.20`) using the MongoDB adapter (`@payloadcms/db-mongodb`) with any collection that relies on field-level access control to restrict writes under certain conditions.\n\nRelational adapters (Postgres, SQLite) are not affected.\n\n### Patches\nHandling of incoming field data has been hardened so field-level access control is enforced consistently.\n\nUsers should upgrade to `3.87.0` (or `4.0.0-canary.20` on the `4.x` line) or later.\n\n### Workarounds\nThere is no complete workaround. Upgrading to `3.87.0` (or `4.0.0-canary.20` on the `4.x` line) is recommended.","published":"2026-10-06T16:56:55.715Z","modified":"2026-10-21T02:54:34.857994639Z","cvss":{"score":7.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"@payloadcms/db-mongodb","fixedVersion":"3.87.0"},{"ecosystem":"npm","name":"@payloadcms/db-mongodb","fixedVersion":"4.0.0-canary.20"}],"fix":{"url":"https://github.com/payloadcms/payload/commit/2a69863deb0e3c87e36c1b3b17ab2d5b02fcb941","label":"payloadcms/payload@2a69863"},"references":[{"type":"WEB","url":"https://github.com/payloadcms/payload/releases/tag/v3.87.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/106xxx/CVE-2026-106100.json"},{"type":"ADVISORY","url":"https://github.com/payloadcms/payload/security/advisories/GHSA-4ww4-68q3-h7g5"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106100"},{"type":"FIX","url":"https://github.com/payloadcms/payload/commit/2a69863deb0e3c87e36c1b3b17ab2d5b02fcb941"},{"type":"FIX","url":"https://github.com/payloadcms/payload/commit/8f77dffa9552885ec2710768cfee15b57e389935"},{"type":"PACKAGE","url":"https://github.com/payloadcms/payload"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-21T02:54:34.857994639Z"}}