CVE WatchSep 1, 2026

CVE-2026-81490

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 fun

CVSS

7.7

High

EPSS

0.2%

p14

KEV

—

Exploit Today

0-100

Published: Aug 28, 2026 · Last modified: Sep 1, 2026 · CWE-476

EPSS · 30d

0.2%EPSS · 30 days0.2%

2026-08-292026-08-31

Technical description

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.

Official references

www.mongodb.comhttps://www.mongodb.com/docs/bi-connector/current/release-notes/

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