CVE-2026-9100 — MEDIUM (5.9)

Vulnerability 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).

CVSS Score

5.9

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-1285

References

https://jira.mongodb.org/browse/CDRIVER-6281

FAQ

What is CVE-2026-9100?

CVE-2026-9100 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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 th...

How severe is CVE-2026-9100?

CVE-2026-9100 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-9100?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.