CVE-2026-81490
MongoDB BI Connector schema-sampling can be broken by crafted view, halting SQL query results.
Is CVE-2026-81490 being exploited?
Not confirmed. CVE-2026-81490 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.24% probability of exploitation in the next 30 days.
How severe is CVE-2026-81490?
CVE-2026-81490 is rated High with a CVSS score of 8.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-81490?
Yes. A fix has been recorded for CVE-2026-81490. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-81490 affect?
CVE-2026-81490 affects MongoDB Connector for BI (mongosqld), MongoDB deployments using BI Connector, Namespaces/views sampled by mongosqld. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-81490?
Apply MongoDB BI Connector patch, remove or exclude the malicious view, and restrict createView privileges.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
A database user who can create a view can stop schema sampling, causing mongosqld to lack a usable schema and deny SQL query results until remediation.
Immediate action required
- affected< 2.14.31
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.