{"cve":"CVE-2026-96747","nvd":{"published":"2026-09-24T19:17:20.650","modified":"2026-09-24T21:04:40.340","status":"Undergoing Analysis","description":"The client-side field level encryption support in the MongoDB Python Driver can treat a key management endpoint value ending in \".sock\" as a local Unix domain socket path rather than a remote host. A user with write access to the encryption key metadata stored in the database can cause an application using the driver to open connections to local sockets on the application host. Data sent over these connections is limited to the start of a TLS handshake, so no chosen content is transmitted.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N","score":5.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N","score":5.0},"cwes":["CWE-918"],"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-qx36-8mw2-4r3x"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:56:02.509636177+00:00"},"epss":{"cve":"CVE-2026-96747","score":0.0019,"percentile":0.08668,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-qx36-8mw2-4r3x","url":"https://osv.dev/vulnerability/GHSA-qx36-8mw2-4r3x","summary":"PyMongo: PYTHON-5990 Forced Unix domain socket connection via a .sock KMS endpoint in client-side field level encryption","modified":"2026-10-15T14:56:22.650690155Z","packages":[{"ecosystem":"PyPI","name":"pymongo","purl":"pkg:pypi/pymongo","ranges":[">=3.9.0 <4.18.2"],"fixed":["4.18.2"]}]},{"id":"PYSEC-2026-4295","url":"https://osv.dev/vulnerability/PYSEC-2026-4295","summary":"PyMongo: PYTHON-5990 Forced Unix domain socket connection via a .sock KMS endpoint in client-side field level encryption","modified":"2026-10-15T14:45:14.717991694Z","packages":[{"ecosystem":"PyPI","name":"pymongo","purl":"pkg:pypi/pymongo","ranges":[">=3.9.0 <4.18.2"],"fixed":["4.18.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}