CVE-2026-114649
Authentication bypass via issuer-and-serial-only certificate equality in shared cluster cache
- State
- Published
- Severity
- 7.6 High
- Published
- Oct 22, 2026
- Updated
- Oct 22, 2026
- Reserved
- Oct 21, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.6 High | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | mongodb |
| 3.1 | 6.8 Medium | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N | mongodb |
Weaknesses
- CWE-1025 Comparison Using Wrong Factors
Affected Products
| Product | Versions |
|---|---|
C# DriverMongoDB |
|
References
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