EUVD-2026-72918
GHSA-98hm-92wr-4835
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
Unauthenticated network-accessible DoS with no complexity; scope unchanged to mongos host only; C:N/I:N confirmed explicitly by description.
Primary rating from Vendor (mongodb).
CVSS VectorVendor: mongodb
Lifecycle Timeline
3DescriptionCVE.org
An uncontrolled resource consumption weakness exists in the request-handling path of the MongoDB sharded-cluster router process. A client that has network access to a router port and has not authenticated can supply connection-monitoring parameters that cause the server to expend CPU resources without any rate limiting, degrading or denying service to legitimate clients. No authentication, elevated privileges, or user interaction is required. Only availability is affected; data confidentiality and integrity are not impacted.
Articles & Coverage 1
AnalysisAI
Unauthenticated CPU exhaustion in the MongoDB sharded-cluster router process (mongos) allows any client with network access to a router port to supply crafted connection-monitoring parameters that consume unbounded server CPU, degrading or denying service to legitimate clients. The flaw is restricted to sharded deployments running mongos - standalone or replica-set-only mongod instances are not in scope. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the target MongoDB deployment to be configured as a sharded cluster running the mongos router process - standalone mongod or replica-set-only deployments are not affected because they do not run the vulnerable code path. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 8.7 with AV:N/AC:L/AT:N/PR:N/UI:N/VA:H accurately characterizes a trivially exploitable, unauthenticated DoS requiring only network reach to a mongos port. … 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 | Upgrade to MongoDB Server 7.0.41, 8.0.30, or 8.3.9 depending on the active release track; these are the confirmed fixed versions per EUVD-2026-72918 and the vendor patch referenced in SERVER-132650. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, inventory all MongoDB sharded deployments and identify mongos instances exposed to untrusted networks. …
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External POC / Exploit Code
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