{"id":"CVE-2026-82052","title":"The $regexFindAll expression can be used by an authenticated user who can run aggregation pipeline stages to crash a MongoDB server (mongod)","summary":"The $regexFindAll expression can be used by an authenticated user who can run aggregation pipeline stages to crash a MongoDB server (mongod). Under certain specific conditions the  regex match can start in the middle of a multi-code-unit…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-617"],"vendor":"mongodb","product":"mongodb","affected":["mongodb >= 7.0.0, < 7.0.41","mongodb >= 8.0.0, < 8.0.30","mongodb >= 8.3.0, < 8.3.9"],"patched":["mongodb 8.3.9"],"published":"2026-09-08","updated":"2026-09-16","sourceUpdated":"2026-09-16T20:40:42.030","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-82052","references":[{"url":"https://jira.mongodb.org/browse/SERVER-127985","label":"cna@mongodb.com"},{"url":"https://jira.mongodb.org/browse/SERVER-124077","label":"cna@mongodb.com"}],"tags":["nvd","cve.org"],"epss":0.0035,"epssPercentile":0.28594,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-08T17:55:24.603574Z"},"ingestedAt":"2026-09-08T16:34:19.257Z","slug":"CVE-2026-82052","body":"## Overview\n\nThe $regexFindAll expression can be used by an authenticated user who can run aggregation pipeline stages to crash a MongoDB server (mongod). Under certain specific conditions the  regex match can start in the middle of a multi-code-unit character, triggering an assertion during query execution.\n\n## Affected\n\n- `mongodb >= 7.0.0, < 7.0.41`\n- `mongodb >= 8.0.0, < 8.0.30`\n- `mongodb >= 8.3.0, < 8.3.9`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `mongodb 8.3.9`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}