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CVE PROGRAM SOURCE RECORD7.6 High

CVE-2026-114649

Authentication bypass via issuer-and-serial-only certificate equality in shared cluster cache

Description

The MongoDB C# Driver compares TLS client certificates by issuer and serial number only when deciding whether two clients can share cached connections. In an application that creates clients from certificates supplied by different users, a user who provides a certificate copying another user's issuer and serial number, without that user's private key, can be given connections authenticated with the other user's certificate. Database operations can then run under the other user's identity, affecting the confidentiality and integrity of data that identity can access.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

MongoDB C# Driver

Default version status: unaffected

  • 1.8.0 to < 3.13.0affected

References