CVE-2026-75159 MongoDB CVE debrief

Who should care

Defenders responsible for MongoDB Connector for BI deployments, especially those configured with Kerberos authentication, should assess their exposure and prioritize verifying the impact of this vulnerability.

Why it matters

CVE-2026-75159 is a high-severity vulnerability in MongoDB Connector for BI that can cause the mongosqld process to terminate, interrupting BI Connector availability. Defenders should prioritize verifying exposure and assessing the impact on their deployments, especially those configured with Kerberos authentication.

• Potential interruption of BI Connector availability
• Need to verify exposure and assess impact on MongoDB Connector for BI deployments
• Possible need to upgrade to version 2.14.30 or later
• Requirement to review Kerberos authentication settings

Technical summary

CVE-2026-75159 is a high-severity vulnerability in MongoDB Connector for BI that can cause the mongosqld process to terminate when a crafted authentication exchange encounters a specific GSSAPI error-handling condition. This can interrupt BI Connector availability until the process restarts. The vulnerability has a CVSS score of 8.2 and affects versions prior to 2.14.30. It is crucial for defenders to prioritize verifying exposure and assessing the impact on their MongoDB Connector for BI deployments, especially those configured with Kerberos authentication. Detailed technical analysis and verification of the vulnerability's impact are necessary to ensure the security of affected deployments.

Defensive priority

Defenders should prioritize verifying exposure and assessing the impact of this vulnerability on their MongoDB Connector for BI deployments, especially those configured with Kerberos authentication.

Recommended defensive actions

• Verify MongoDB Connector for BI version and configuration
• Assess exposure to unauthenticated client attacks
• Review Kerberos authentication settings
• Consider upgrading to version 2.14.30 or later
• Perform a thorough review of the current security posture
• Implement additional monitoring for potential attacks
• Document and track the verification process and findings

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, including its description, CVSS score, and affected versions. However, the exact scope of affected deployments and potential impact require further verification.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.