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CVE-2026-84964 Details
Description
A double free in the OpenSSL-based TLS certificate revocation checking path of the MongoDB C Driver can be reached by a TLS endpoint that the client already trusts. During the handshake, specially formed certificate data can cause the same heap object to be released twice. An unauthenticated party acting as the trusted endpoint may cause the connecting client application to terminate unexpectedly.
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 Sep 3, 2026Exploitation: NoneAutomatable: NoTechnical Impact: Partial
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://jira.mongodb.org/browse/CDRIVER-6409 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-415 | Double Free | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| mongodb c driver | >= 1.17.0, < 1.30.9 >= 2.0.0, < 2.5.2 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 22, 2026 | Initial Analysis | [email protected] |
| Sep 3, 2026 | New CVE Received | [email protected] |
| Sep 3, 2026 | CVE Modified | CISA-ADP |