EUVD-2026-67933
GHSA-87fw-525c-9h5m
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network-reachable with no authentication or complexity; sole impact is availability of the mongosqld process with no scope change to other systems.
Primary rating from Vendor (mongodb).
CVSS VectorVendor: mongodb
Lifecycle Timeline
3DescriptionCVE.org
An unauthenticated party able to reach the port of a MongoDB Connector for BI (mongosqld) instance may generate enough routine connection log activity to exhaust the storage backing the configured log path. When a log write or log rotation operation subsequently fails, the resulting error is not handled and the shared mongosqld process ends, ending service for all connected SQL clients. The process continues to end on startup until an operator restores available storage, and the diagnostic message explaining the condition is not recorded.
AnalysisAI
Log storage exhaustion in MongoDB Connector for BI (mongosqld) allows any unauthenticated network peer to crash the shared process by generating sufficient connection log volume to fill the configured log path's backing storage. When a subsequent log write or rotation operation fails, an uncaught exception (CWE-248) terminates the mongosqld process, immediately denying SQL service to all connected clients. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No authentication is required and no special product configuration is needed beyond the default logging behavior enabled in all mongosqld deployments. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 8.7 (AV:N/AC:L/AT:N/PR:N/UI:N/VA:H) accurately reflects a trivially exploitable network denial-of-service with no mitigating complexity. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Consult the MongoDB BI Connector release notes at https://www.mongodb.com/docs/bi-connector/current/release-notes/ and upgrade to the version identified as containing the fix - no specific patched version number is confirmed from available data. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: implement network ACLs to restrict mongosqld access to authorized clients only and configure log rotation with strict file size limits to constrain disk space consumption. …
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Same weakness CWE-248 – Uncaught Exception
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External POC / Exploit Code
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