CVE-2026-9100

Name	CVE-2026-9100
Description	The MongoDB C Driver's legacy GridFS API accepts malformed file metadata from the database without adequate validation. Crafted documents in a GridFS collection may cause any application that reads those files via the legacy API to either crash (via a division-by-zero) or silently leak process memory contents (via an out-of-bounds read).
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	1137217

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
mongo-c-driver (PTS)	bookworm	1.23.1-1+deb12u3	fixed
	trixie	1.30.4-1+deb13u3	fixed
	forky, sid	2.5.3-1	fixed

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

Package	Type	Release	Fixed Version	Debian Bugs
mongo-c-driver	source	bookworm	1.23.1-1+deb12u3
mongo-c-driver	source	trixie	1.30.4-1+deb13u2
mongo-c-driver	source	(unstable)	2.2.4-1	1137217

Notes

https://jira.mongodb.org/browse/CDRIVER-6281
Fixed by: https://github.com/mongodb/mongo-c-driver/commit/5300219c09d53f361125066f57e05d0e392e56a1 (2.2.4)
Fixed by: https://github.com/mongodb/mongo-c-driver/commit/f70634e1d6d084f3b0f7077d03bde2d4cb95ce37 (1.30.8)