Is CVE-2026-114645 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-114645 being exploited in the wild.

How severe is CVE-2026-114645?

Medium severity, with a CVSS score of 5.2, published 22 October 2026.

Which products and versions are affected?

MongoDB C Driver versions prior to 1.30.14 and 2.5.7.

Is there a fix for CVE-2026-114645?

Yes: fixed in C Driver 1.30.14, 2.5.7. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-114645 attacked?

It is attacked with local access, in a software library.

Am I affected by CVE-2026-114645?

Check whether you run MongoDB C Driver at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-114645: MongoDB C Driver integer wraparound in Kerberos/SSPI authentication

CVE-2026-114645 · Severity: medium · CVSS 5.2 · Published 2026-10-22

The MongoDB C Driver, used by applications to connect to MongoDB databases, contains a buffer overflow vulnerability in its Windows authentication code when handling long credential values. An attacker who can control a client's connection configuration could cause the client application to crash or become unstable by triggering memory corruption.

Technologies: MongoDB C Driver. Vendors: MongoDB.

Quick answers

Is CVE-2026-114645 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-114645 being exploited in the wild.
How severe is CVE-2026-114645?: Medium severity, with a CVSS score of 5.2, published 22 October 2026.
Which products and versions are affected?: MongoDB C Driver versions prior to 1.30.14 and 2.5.7.
Is there a fix for CVE-2026-114645?: Yes: fixed in C Driver 1.30.14, 2.5.7. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-114645 attacked?: It is attacked with local access, in a software library.
Am I affected by CVE-2026-114645?: Check whether you run MongoDB C Driver at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: C Driver 1.30.14, 2.5.7

Technical details

A 32-bit integer wraparound in the Windows-only Kerberos/SSPI authentication backend causes undersized heap buffer allocation when excessively long credential values are supplied in client connection configuration. An attacker controlling client-side configuration can trigger an out-of-bounds write, corrupting client process memory. The vulnerability exists only in Windows builds using the native authentication backend and requires the ability to modify client connection configuration.

Affected products

MongoDB C Driver versions prior to 1.30.14 and 2.5.7

Timeline

2026-10-22: disclosed
2026-10-22: patched

References

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