CVE-2026-81490

Name of the Vulnerable Software and Affected Versions MongoDB Connector for BI (affected versions not specified)

Description A database user with permissions to create a view in a namespace sampled by MongoDB Connector for BI can cause a denial of service by defining a view that reliably fails during evaluation. The schema-sampling routine incorrectly classifies the resulting server error as transient. Once the configured retries are exhausted, the routine terminates without a valid result, leaving the mongosqld process running but without a usable schema. Consequently, SQL clients cannot obtain results until the problematic view is removed or its namespace is excluded from sampling.

Recommendations Restrict view creation privileges to prevent unauthorized users from creating malicious views. As a temporary mitigation, remove the failing view or exclude its namespace from the sampling routine.