CVE-2026-82076 MongoDB CVE debrief

Who should care

MongoDB Server administrators and users with database-level read/write privileges should assess exposure and apply patches or mitigations to prevent exploitation. This includes reviewing system logs for unusual activity, restricting query planning privileges, and updating to patched versions of MongoDB Server. Additionally, security teams and operators managing MongoDB deployments should be aware of the potential impact and take necessary precautions to防止

Why it matters

CVE-2026-82076 is a high-severity vulnerability in MongoDB Server that can lead to denial of service and potential data loss. MongoDB Server administrators and users with database-level read/write privileges should assess exposure and apply patches or mitigations to prevent exploitation.

• Denial of Service (DoS) due to server process termination
• Potential data loss or corruption due to server crashes
• Increased resource utilization due to crafted query execution
• Possible lateral movement or privilege escalation if exploited in conjunction with other vulnerabilities

Technical summary

An integer overflow in the query planning component of MongoDB Server can allow an authenticated user with ordinary database-level read/write privileges to bypass an internal resource limit. Submitting a specially crafted query causes the server to consume memory without bound during query planning, and the resulting exhaustion terminates the server process. This issue affects various MongoDB versions, including 7.0.0 to 7.0.41, 8.0.0 to 8.0.30, 8.2.0 to 8.2.13, 8.3.0 to 8.3.9, and 9.0.0 alpha versions. The vulnerability can lead to denial of service and potential data loss.

Defensive priority

High

Recommended defensive actions

• Review and apply patches for affected MongoDB versions
• Restrict query planning privileges to prevent exploitation
• Monitor MongoDB Server for unusual query activity
• Update to a patched version of MongoDB Server
• Perform vulnerability assessment to identify potential exposure
• Implement compensating controls for exposed systems
• Track exceptions and retest remediated assets

Evidence notes

The CVE record and NVD entry provide details on an integer overflow vulnerability in MongoDB Server's query planning component, which can lead to a denial of service. The vulnerability affects various versions of MongoDB, including 7.0.0 to 7.0.41, 8.0.0 to 8.0.30, 8.2.0 to 8.2.13, 8.3.0 to 8.3.9, and 9.0.0 alpha versions.

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.