EUVD-2026-72948
GHSA-5pfw-53c7-27v7
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/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 read-level credentials (PR:L), no complexity; high integrity and availability from UAF write/crash, no confidentiality impact confirmed.
Primary rating from Vendor (mongodb).
CVSS VectorVendor: mongodb
Lifecycle Timeline
3DescriptionCVE.org
A use-after-free security issue exists in the server's query execution memory tracking subsystem. An authenticated user with read privileges can trigger a write to freed heap memory through a sequence of standard database commands, leading to server process crash or potential memory corruption. No user interaction is required.
Articles & Coverage 1
AnalysisAI
Use-after-free in MongoDB Server 8.3.x (versions 8.3.0 through 8.3.8) allows authenticated users holding read-only privileges to write to freed heap memory by issuing a specific sequence of standard database commands against the query execution memory tracking subsystem. The immediate consequence is a server process crash (denial of service); heap memory corruption may also enable more sophisticated follow-on exploitation. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid MongoDB account with at minimum read privileges - the CVSS PR:L metric confirms authenticated access is mandatory; unauthenticated exploitation is not possible. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 score of 7.2 (AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H) reflects a network-reachable flaw requiring low-privilege authentication with no special attack complexity, delivering high integrity and availability impact but no confidentiality breach - consistent with a crash/heap-corruption primitive rather than data exfiltration. … 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 MongoDB Server to version 8.3.9 or later, which contains the vendor-released patch for this use-after-free. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all MongoDB Server 8.3.x deployments in your environment and confirm which are running versions 8.3.0 through 8.3.8. …
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Same weakness CWE-416 – Use After Free
View allSame technique Buffer Overflow
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External POC / Exploit Code
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