What is CVE-2026-107325?

CVE-2026-107325 is a medium-severity vulnerability in MongoDB Go Driver, classified under Improper Validation of Array Index. CVSS score: 5.9/10. Published 2026-10-08.

How severe is CVE-2026-107325?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in MongoDB Go Driver

CVE-2026-107325

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.

Published 2026-10-08 · last modified 2026-10-08.

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

MongoDB Go Driver

Weakness classification (CWE)

CWE-129 — Improper Validation of Array Index

References

jira.mongodb.org/browse/GODRIVER-4136

Frequently asked questions

What is CVE-2026-107325?: CVE-2026-107325 is a medium-severity vulnerability in MongoDB Go Driver, classified under Improper Validation of Array Index. CVSS score: 5.9/10. Published 2026-10-08.
How severe is CVE-2026-107325?: Medium severity. CVSS v3 base score is 5.9 out of 10.