CVE-2026-114649
The MongoDB C# Driver compares TLS client certificates by issuer and serial number only when…
- Risk score
- 43/100
- CVSS
- 6.8 v3.1
- Exploit chance (30 days)
- 0.2%
- Published
- 22 Oct 2026
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What to know
- What it is
- 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…
- Affected
- See advisory
- Fix
- Apply the vendor's security update; see the linked advisory.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 6.8 medium
References
Original 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.
Last activity 22 Oct 2026. Patch Forecast updates every hour.