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CVE-2026-106433 Details
Description
Improper state management in MongoDB libmongocrypt can cause provider-specific data to be treated as an incompatible type when cleaning up a key document containing duplicate masterKey fields. An authenticated actor who can modify key vault documents, or a server that returns such a key document, can cause invalid memory access and invalid frees in the client process. This can terminate the application or corrupt process memory.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Oct 8, 2026Exploitation: NoneAutomatable: NoTechnical Impact: Total
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://jira.mongodb.org/browse/MONGOCRYPT-964 | [email protected] | Vendor AdvisoryIssue Tracking |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-843 | Access of Resource Using Incompatible Type ('Type Confusion') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| mongodb libmongocrypt | >= 1.5.0, < 1.20.5 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 27, 2026 | Initial Analysis | [email protected] |
| Oct 8, 2026 | CVE Modified | CISA-ADP |
| Oct 8, 2026 | New CVE Received | [email protected] |