EUVD-2026-72946
GHSA-4xr8-p4jv-mh28
Severity by source
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/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 by read-only authenticated user (PR:L, AV:N); only availability is impacted (process termination); no scope change as only the targeted mongod instance is affected.
Primary rating from Vendor (mongodb).
CVSS VectorVendor: mongodb
Lifecycle Timeline
3DescriptionCVE.org
An internal aggregation expression in MongoDB Server was incorrectly registered as accessible to any authenticated user rather than being restricted to internal cluster operations. By crafting a malformed index specification within this expression, an authenticated user with read-only privileges could trigger an assertion failure in the index key generation code path. In certain build configurations, this assertion failure results in termination of the mongod process, causing a denial of service to all connected clients.
AnalysisAI
Denial of service in MongoDB Server allows any authenticated user - including those with only read-only privileges - to crash the mongod process by exploiting an internal aggregation expression that was incorrectly registered as user-accessible rather than restricted to internal cluster operations. Submitting a malformed index specification within this expression triggers an assertion failure (CWE-617) in the index key generation code path. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid MongoDB authentication credential with at minimum read privileges on any database - no administrative, dbAdmin, or clusterAdmin role is needed. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 6.0 with vector AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N accurately characterizes the threat profile. … 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, which contain the vendor-released patch per the advisory at https://jira.mongodb.org/browse/SERVER-130571. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-617 – Reachable Assertion
View allSame technique Denial Of Service
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External POC / Exploit Code
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