CVE-2026-96747

Name	CVE-2026-96747
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1148967

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
pymongo (PTS)	bookworm	3.11.0-1+deb12u1	vulnerable
	trixie	4.10.1-6	vulnerable
	forky, sid	4.18.2-1	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
pymongo	source	(unstable)	4.18.2-1			1148967

Notes

[trixie] - pymongo <no-dsa> (Minor issue)
[bookworm] - pymongo <postponed> (Minor issue)
https://github.com/mongodb/mongo-python-driver/security/advisories/GHSA-qx36-8mw2-4r3x