{"id":"CVE-2026-13062","title":"MongoDB mongos Improper Validation of Internal Flags in Queryable Encryption Write Commands on Sharded Clusters","summary":"An authenticated user with write privileges on a Queryable Encryption-enabled collection may be able to modify internal encryption metadata fields that are intended to be server-controlled, by sending crafted write commands through the m…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","cvssSource":"cna","cwe":["CWE-441"],"vendor":"MongoDB","product":"MongoDB Server","affected":["server >= 7.0 < 7.0.39","server >= 8.0 < 8.0.28","server >= 8.2.0 < 8.2.12","server >= 8.3.0 < 8.3.7"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-07-23T14:23:23.309382Z"},"published":"2026-07-22","updated":"2026-09-17","sourceUpdated":"2026-09-17T18:36:08.275Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-13062","references":[{"url":"https://jira.mongodb.org/browse/SERVER-127831"}],"tags":["cve.org"],"epss":0.00188,"epssPercentile":0.08621,"ingestedAt":"2026-09-17T19:26:25.353Z","slug":"CVE-2026-13062","body":"## Overview\n\nAn authenticated user with write privileges on a Queryable Encryption-enabled collection may be able to modify internal encryption metadata fields that are intended to be server-controlled, by sending crafted write commands through the mongos router on a sharded cluster. This can result in corruption of encrypted query correctness.\n\n## Affected\n\n- `server >= 7.0 < 7.0.39`\n- `server >= 8.0 < 8.0.28`\n- `server >= 8.2.0 < 8.2.12`\n- `server >= 8.3.0 < 8.3.7`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}