{"id":"CVE-2026-93764","title":"Mongoid may omit encryption rules for fields declared on embedded models when generating the client-side field-level encryption schema","summary":"Mongoid may omit encryption rules for fields declared on embedded models when generating the client-side field-level encryption schema. Applications that enable this feature can therefore store values intended to be encrypted in readable…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-312"],"vendor":"mongodb","product":"mongoid","affected":["mongoid >= 9.0.0, < 9.0.12","mongoid = 9.1.0"],"patched":["mongoid 9.0.12"],"published":"2026-09-18","updated":"2026-09-24","sourceUpdated":"2026-09-24T16:00:04.347","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-93764","references":[{"url":"https://jira.mongodb.org/browse/MONGOID-5989","label":"cna@mongodb.com"}],"tags":["nvd","cve.org"],"epss":0.0015,"epssPercentile":0.04094,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-21T18:47:34.639417Z"},"ingestedAt":"2026-09-18T17:46:41.552Z","slug":"CVE-2026-93764","body":"## Overview\n\nMongoid may omit encryption rules for fields declared on embedded models when generating the client-side field-level encryption schema. Applications that enable this feature can therefore store values intended to be encrypted in readable form, with no error or warning. A party with routine read access to the database, a backup, or the underlying data files may then see data that was meant to remain unreadable outside the application.\n\n## Affected\n\n- `mongoid >= 9.0.0, < 9.0.12`\n- `mongoid = 9.1.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `mongoid 9.0.12`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}