What is CVE-2026-8199?

CVE-2026-8199 is a medium-severity vulnerability in Mongodb, classified under CWE-1325. CVSS score: 6.5/10. Published 2026-05-13.

How severe is CVE-2026-8199?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in Mongodb

CVE-2026-8199

An authenticated user can cause excess memory usage via bitwise match expression AST processing of $bitsAllSet, $bitsAnySet, $bitsAllClear, and $bitsAnyClear. This contributes to memory pressure and may lead to availability loss by OOM. T…

EPSS: 0.001 (21.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Mongodb
Mongodb, Inc. Mongodb Server — versions 7.0, 8.0, 8.2

Weakness classification (CWE)

CWE-1325

References

cna@mongodb.com (issue-tracking, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2026-8199?: CVE-2026-8199 is a medium-severity vulnerability in Mongodb, classified under CWE-1325. CVSS score: 6.5/10. Published 2026-05-13.
How severe is CVE-2026-8199?: Medium severity. CVSS v3 base score is 6.5 out of 10.