Medium severity · published Oct 8, 2026
CVE-2026-107325
Application denial of service via missing BSON array length validation in MongoDB Go Driver
5.9
CVSS
0.2%
EPSS
No
On KEV
Description
Improper validation of a BSON array length in the MongoDB Go Driver can cause an out-of-bounds index and runtime panic when an application calls bson.RawArray.Validate or bsoncore.Array.Validate on a malformed four-byte array. An unauthenticated actor who can supply raw BSON array data to an affected application may terminate an unprotected application process, causing a denial of service. No confidentiality or integrity impact has been identified.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MO
MongoDB · MongoDB
1.1.0 before 1.*; 2.0.0 before 2.9.2 · source: vendor
GD
GO Driver · Mongodb
1.1.0 before 1.17.10; 2.0.0 before 2.9.2 · source: NVD
Affected product
MO
MongoDB
MongoDB
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