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Description

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.

PUBLISHED Reserved 2026-05-08 | Published 2026-05-13 | Updated 2026-05-13 | Assigner mongodb




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

MEDIUM: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Problem types

CWE-770: Allocation of Resources Without Limits or Throttling

Product status

Default status
unaffected

7.0 (custom) before 7.0.34
affected

8.0 (custom) before 8.0.23
affected

8.2 (custom) before 8.2.9
affected

8.3 (custom) before 8.3.2
affected

References

jira.mongodb.org/browse/SERVER-120668 issue-tracking

cve.org (CVE-2026-8202)

nvd.nist.gov (CVE-2026-8202)

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