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.
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Fixes
Solution
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Workaround
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References
| Link | Providers |
|---|---|
| https://jira.mongodb.org/browse/CDRIVER-6409 |
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History
Thu, 03 Sep 2026 15:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Heap corruption via OCSP request double free from crafted multi-URL certificate in TLS client | |
| Weaknesses | CWE-415 | |
| References |
| |
| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: mongodb
Published:
Updated: 2026-09-03T15:42:32.343Z
Reserved: 2026-09-02T17:58:52.742Z
Link: CVE-2026-84964
No data.
Status : Awaiting Analysis
Published: 2026-09-03T16:18:25.270
Modified: 2026-09-03T16:25:43.557
Link: CVE-2026-84964
No data.
OpenCVE Enrichment
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Weaknesses