Authentication bypass via issuer-and-serial-only certificate equality in shared cluster cache
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,…
Severity high: primary CNA CVSS 7.6 v4.0 (worst CNA-provided scenario) Not listed in this KEV snapshot. Forecast present in this snapshot.
Published 2026-10-22T19:13:54.140Z. Updated 2026-10-22T20:38:21.959Z.