VULNERABILITY INTELLIGENCE

CVE-2026-84964

CVSS score5.9 MEDIUM
EPSS probability0.26%
CISA KEVNot currently listed
Published2026-09-03
Last modified2026-09-22
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Weakness classification

  • cna@mongodb.com: CWE-415

Primary references