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VULNERABILITIES

CVE-2026-96748 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/mongodb/mongo-python-driver/blob/4.18.2/doc/changelog.rst [email protected]
https://github.com/mongodb/mongo-python-driver/releases/tag/4.18.2 [email protected]
https://github.com/mongodb/mongo-python-driver/security/advisories/GHSA-vp6j-j7w5-5xjj [email protected]

Weakness Enumeration

CWE-IDCWE NameSource
CWE-177Improper Handling of URL Encoding (Hex Encoding)[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-96748
NVD Published Date:
Sep 24, 2026
NVD Last Modified:
Sep 24, 2026
Source:
[email protected]
CVE-2026-96748 Details - Not Deferred