Improper Validation of Array Index in MongoDB Go Driver - CVE-2026-107325
Published: October 15, 2026
Vulnerability identifier: #VU155864
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-107325
CWE-ID: CWE-129
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper validation of array lengths used to calculate array indices in bson.RawArray.Validate when validating untrusted BSON arrays. A remote attacker can supply a crafted BSON array with a declared length of zero to cause a denial of service.
A four-byte payload consisting entirely of zero bytes triggers an index-out-of-range runtime panic.
Affected software
MongoDB Go Driver
How to mitigate CVE-2026-107325
Install security update from vendor's website.
MongoDB Go Driver - update to 2.9.2