CVE-2026-13057 MongoDB, Inc. CVE debrief

Who should care

Users of MongoDB server with Atlas Search integration, especially those with sharded topologies, should verify their configurations and ensure proper access controls are in place. This includes reviewing and enhancing input validation for $search and $searchMeta aggregation stages, monitoring for suspicious activity, and verifying configurations to prevent unauthorized access.

Technical summary

The CVE-2026-13057 vulnerability allows an authenticated user to bypass per-user access controls in the server’s Atlas Search integration. This is due to insufficient input validation in the $search and $searchMeta aggregation stages, which can be exploited by an authenticated client in sharded topologies. The vulnerability has a CVSS score of 6, indicating a medium severity level. Users of MongoDB server with Atlas Search integration, especially those with sharded topologies, should verify their configurations and ensure proper access controls are in place.

Defensive priority

Medium priority due to the CVSS score of 6 and the potential for access control bypass. This vulnerability requires attention to ensure proper access controls are in place and to review input validation for $search and $searchMeta aggregation stages. Monitoring for suspicious activity in sharded topologies is also recommended. The CVE record indicates that this issue has not been modified since its publication on 2026-07-22T20:16:43.523Z. Limited source detail suggests verifying configurations and ensuring proper access controls are in place. Additional review of sharded topologies and $search and $searchMeta aggregation stages is necessary. Users should review and enhance input validation for these stages and monitor for suspicious activity. Compensating controls for exposed systems should be reviewed while remediation is scheduled and verified. Exceptions, retest remediated assets, and close the item only after evidence is documented. Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up. Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance. Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed. Check relevant monitoring, detection, and logs for exposed assets that need extra review. Track exceptions, retest remediated assets, and close the item only after evidence is documented. Verify and enforce proper access controls for Atlas Search integration. Review and enhance input validation for $search and $searchMeta aggregation stages. Monitor for suspicious activity in sharded topologies. Perform an asset inventory to identify potentially affected systems. Consider rollback or change windows for remediation. Source tracking and monitoring should be implemented to detect potential exploitation attempts. Compensating controls should be reviewed and implemented for exposed systems while remediation is scheduled. Exposure review should be conducted to understand the potential impact on the organization. Vendor patch guidance should be followed for remediation. The debrief provides an overview of the issue, a

Recommended defensive actions

• Verify and enforce proper access controls for Atlas Search integration
• Review and enhance input validation for $search and $searchMeta aggregation stages
• Monitor for suspicious activity in sharded topologies
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Track exceptions, retest remediated assets, and close the item only after evidence is documented

Evidence notes

Evidence is limited; primary official records indicate an issue with Atlas Search integration allowing access control bypass. Further verification and monitoring are recommended. The CVE record was published on 2026-07-22T20:16:43.523Z and has not been modified since then. Limited source detail suggests verifying configurations and ensuring proper access controls are in place. Additional review of sharded topologies and $search and $searchMeta aggregation stages is necessary.

Official resources