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

CVE-2026-8202 is fixed in MongoDB on 1 platform by MongoDB 8.3.2 (version 8.3.2), released May 12, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-8202
- Priority: Routine
- CVSS: 5.3
- EPSS: 0.0026
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 13, 2026
- Weakness: CWE-770: Allocation of Resources Without Limits or Throttling
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-8202

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | MongoDB | 8.3.2 | [MongoDB 8.3.2](https://patchblox.com/security/data/fix/windows-app/mongodb.server-8.3.2.md) | May 12, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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