What is CVE-2026-82061?

CVE-2026-82061 is a high-severity vulnerability in MongoDB Server, classified under Use After Free. CVSS score: 8.1/10. Published 2026-09-08.

How severe is CVE-2026-82061?

High severity. CVSS v3 base score is 8.1 out of 10.

Use After Free in MongoDB Server

CVE-2026-82061

A use-after-free security issue exists in the server's query execution memory tracking subsystem. An authenticated user with read privileges can trigger a write to freed heap memory through a sequence of standard database commands, leading to server process crash or potential memory corruption. No user interaction is required.

Vulnerability class: Use-After-Free

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

Affected products

Mongodb Server

Weakness classification (CWE)

CWE-416 — Use After Free

References

cna@mongodb.com

Frequently asked questions

What is CVE-2026-82061?: CVE-2026-82061 is a high-severity vulnerability in MongoDB Server, classified under Use After Free. CVSS score: 8.1/10. Published 2026-09-08.
How severe is CVE-2026-82061?: High severity. CVSS v3 base score is 8.1 out of 10.