Quick answers
- Is CVE-2026-75159 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-75159 being exploited in the wild.
- How severe is CVE-2026-75159?
- Medium severity, with a CVSS score of 5.9, published 27 August 2026.
- Which products and versions are affected?
- MongoDB Connector for BI <UNKNOWN>.
- Is there a fix for CVE-2026-75159?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-75159 attacked?
- It is attacked over the network, in a hosted service.
- Am I affected by CVE-2026-75159?
- Check whether you run MongoDB Bi Connector or MongoDB Connector for BI 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.
Technical details
The vulnerability exists in the GSSAPI authentication error handling within mongosqld when Kerberos authentication is enabled. An unauthenticated network client can send specially crafted authentication exchanges that trigger a specific error condition in the GSSAPI library interaction, causing mongosqld to terminate abnormally. The attack requires network reachability to the BI Connector deployment but no valid credentials. The impact is availability disruption (denial of service) requiring process restart to restore functionality. A fix is expected to be available in MongoDB's release notes.
Affected products
- MongoDB Connector for BI <UNKNOWN>
Timeline
- 2026-08-27: published