Vulnerability Description
PyMongo's connection string parsing decodes percent-encoded characters in the host portion before the host list is separated on its delimiters. When an application places a hostname value supplied by an unauthenticated party into a connection string, that party may cause additional servers of their choosing to be added to the application's database client. The application may then send its authentication exchange and database operations to one of those servers, which can observe limited information and return altered results.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/mongodb/mongo-python-driver/blob/4.18.2/doc/changelog.rst
- https://github.com/mongodb/mongo-python-driver/releases/tag/4.18.2
- https://github.com/mongodb/mongo-python-driver/security/advisories/GHSA-vp6j-j7w
FAQ
What is CVE-2026-96748?
CVE-2026-96748 is a vulnerability with a CVSS score of 6.5 (MEDIUM). PyMongo's connection string parsing decodes percent-encoded characters in the host portion before the host list is separated on its delimiters. When an application places a hostname value supplied by ...
How severe is CVE-2026-96748?
CVE-2026-96748 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-96748?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.