CVE-2026-81490 — MongoDB Connector for BI Improper Error Handling During Schema Sampling May Cause Loss of SQL Service
A database user able to create a view in a namespace that MongoDB Connector for BI samples can cause the schema-sampling routine to stop functioning by defining a view whose eva…
Published: 2026-08-28 · CVSS: 8.3 · CVSS 4.0
A database user able to create a view in a namespace that MongoDB Connector for BI samples can cause the schema-sampling routine to stop functioning by defining a view whose evaluation reliably fails. The sampling logic classifies the resulting server message as transient and, after the configured retries are exhausted, proceeds without a valid result, ending the schema refresh routine. The mongosqld process continues running without a usable schema, so SQL clients are unable to obtain results until an operator removes the view or excludes its namespace from sampling.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7