CVE-2026-81517MongoDB Connector for BI Improper Error Handling of Log Write Failures May Cause Loss of SQL Service
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It affects MongoDB BI Connector. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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An unauthenticated party able to reach the port of a MongoDB Connector for BI (mongosqld) instance may generate enough routine connection log activity to exhaust the storage backing the configured log path. When a log write or log rotation operation subsequently fails, the resulting error is not handled and the shared mongosqld process ends, ending service for all connected SQL clients. The process continues to end on startup until an operator restores available storage, and the diagnostic message explaining the condition is not recorded.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-248
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- mongodb
- NVD analysis
- Analyzed
- Record last updated
- Aug 31, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
MongoDB BI Connector mongodb:bi_connector (from the name) | before 2.14.31 | CNA record |
mongodb bi_connector mongodb:bi_connector | before 2.14.31 | NVD |
References
- https://www.mongodb.com/docs/bi-connector/current/release-notes/vendor-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.