VDB
CVE-2026-84964
CVE-2026-84964
PUBLISHED
CVSS 8.2 HIGH
Reported by mongodb · Published September 3, 2026
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.
Risk Scores
CVSS 4.0
8.2
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| MongoDB | C Driver | 1.17.0, 2.0.0 |
| MongoDB | C Driver | 1.17.0, 2.0.0 |
Timeline
- Sep 3, 2026 Coalition ESS Score
- Sep 3, 2026 CVE Published
- Sep 3, 2026 CVE Updated
- Sep 4, 2026 EPSS Score