{"id":"CVE-2026-18888","title":"The MongoDB BI Connector ODBC Driver converts floating point column values into text without checking that the result fits within the destination buffer","summary":"The MongoDB BI Connector ODBC Driver converts floating point column values into text without checking that the result fits within the destination buffer. When an application reads a sufficiently large floating point value as text, the dr…","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-787"],"vendor":"mongodb","product":"bi_connector_odbc_driver","affected":["bi_connector_odbc_driver >= 1.0.0, < 1.4.9"],"patched":["bi_connector_odbc_driver 1.4.9"],"published":"2026-08-12","updated":"2026-09-11","sourceUpdated":"2026-09-11T18:52:17.057","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-18888","references":[{"url":"https://github.com/mongodb/mongo-bi-connector-odbc-driver/releases/tag/v1.4.9","label":"cna@mongodb.com"}],"tags":["nvd"],"epss":0.00316,"epssPercentile":0.21781,"ingestedAt":"2026-09-11T19:57:09.303Z","slug":"CVE-2026-18888","body":"## Overview\n\nThe MongoDB BI Connector ODBC Driver converts floating point column values into text without checking that the result fits within the destination buffer. When an application reads a sufficiently large floating point value as text, the driver may write beyond the end of that buffer and corrupt adjacent memory. A user who can store data in a collection read through the BI Connector could use this to crash the application performing the read.\n\n## Affected\n\n- `bi_connector_odbc_driver >= 1.0.0, < 1.4.9`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `bi_connector_odbc_driver 1.4.9`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}