CVE-2026-114649
CVE-2026-114649 · Authentication bypass via issuer-and-serial-only certificate equality in shared cluster cache
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.
CVSS 7.6 · High · EPSS 0.2% · Fix available
- Published
- Updated
Affected products and versions
c# driver
- Versions
- ≥ 1.8.0, < 3.13.0: Affected (semver)
Update to 3.13.0