Medium 4.3Published May 12, 2026

CVE-2026-8202Post-authentication CPU utilization DoS via $trim/$ltrim/$rtrim operators

Updated under an hour ago (Oct 26, 2026, 4:50 PM ET)

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It affects MongoDB, Inc. MongoDB Server and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

Using a densely populated chars mask and a large input string in the MongoDB aggregation operators $trim, $ltrim, and $rtrim, an authenticated user with aggregation permissions can pin CPU utilization at 100% for an extended period of time. This issue impacts MongoDB Server v7.0 versions prior to 7.0.34, v8.0 versions prior to 8.0.23, v8.2 versions prior to 8.2.9 and v8.3 versions prior to 8.3.2.

CVSS: 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-770
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: mongodb
NVD analysis: Analyzed
Record last updated: May 12, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

MongoDB, Inc. MongoDB Server mongodb:server (from the name)	from 7.0 before 7.0.34; from 8.0 before 8.0.23; from 8.2 before 8.2.9; from 8.3 before 8.3.2	CNA record
mongodb mongodb mongodb:mongodb	from 7.0.0 before 7.0.34; from 8.0.0 before 8.0.23; from 8.2.0 before 8.2.9; from 8.3.0 before 8.3.2	NVD

References

References

https://jira.mongodb.org/browse/SERVER-120668	issue-tracking, vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.