Integer underflow in MongoDB - CVE-2026-6914
Published: May 4, 2026
Vulnerability identifier: #VU129565
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-6914
CWE-ID: CWE-191
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: MongoDB, Inc.
Affected software:
MongoDB
MongoDB
Detailed vulnerability description
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to integer underflow in binDataClean() when computing the MD5 checksum of a malformed BSON object. A remote attacker can supply a malformed BSON object to cause a denial of service.
How to mitigate CVE-2026-6914
Install security update from vendor's website.