{"id":"CVE-2026-18705","title":"An issue in MongoDB Server's Atlas Vector Search feature could allow an authenticated user with read access to one view to retrieve documents from a different, protected view over the same underlying collection","summary":"An issue in MongoDB Server's Atlas Vector Search feature could allow an authenticated user with read access to one view to retrieve documents from a different, protected view over the same underlying collection. This is due to insufficie…","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-807"],"vendor":"mongodb","product":"mongodb","affected":["mongodb >= 7.0.0, < 7.0.40","mongodb >= 8.0.0, < 8.0.29","mongodb >= 8.2.0, <= 8.2.12","mongodb >= 8.3.0, < 8.3.8","mongodb = 9.0.0","mongodb = 9.1.0"],"patched":["mongodb 8.3.8"],"published":"2026-08-11","updated":"2026-09-16","sourceUpdated":"2026-09-16T15:19:18.490","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-18705","references":[{"url":"https://jira.mongodb.org/browse/SERVER-129618","label":"cna@mongodb.com"}],"tags":["nvd"],"epss":0.00264,"epssPercentile":0.18611,"ingestedAt":"2026-08-29T19:41:16.080Z","slug":"CVE-2026-18705","body":"## Overview\n\nAn issue in MongoDB Server's Atlas Vector Search feature could allow an authenticated user with read access to one view to retrieve documents from a different, protected view over the same underlying collection. This is due to insufficient handling of certain user-supplied fields when constructing an internal request forwarded to the search process.\n\n## Affected\n\n- `mongodb >= 7.0.0, < 7.0.40`\n- `mongodb >= 8.0.0, < 8.0.29`\n- `mongodb >= 8.2.0, <= 8.2.12`\n- `mongodb >= 8.3.0, < 8.3.8`\n- `mongodb = 9.0.0`\n- `mongodb = 9.1.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `mongodb 8.3.8`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}