CVE-2026-9100
CWE-1285Published: May 20, 2026· Updated: May 20, 2026
Official 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).
Technical Analysis
CVE-2026-9100 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 5.9.
CVSS v3.1 Vector Breakdown
Exploit & PoC Resources
All References (1)
Quick Facts
Related CVEs (CWE-1285)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2026-9100 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts