# MongoDB 8.0.18

MongoDB 8.0.18, released January 15, 2026, fixes 2 CVEs in MongoDB. None of them is reported as exploited. Patch Radar priority: High. The latest MongoDB is 9.0.4, which also fixes every one of these CVEs.

- Web page: https://patchblox.com/security/fix/windows-app/mongodb.server-8.0.18
- Platform: Windows apps
- Released: Jan 15, 2026
- Priority: High (Closes CVE-2026-1849, high severity)
- CVEs: 2, exploited: 0, on CISA KEV: 0
- Superseded by: [MongoDB 9.0.4](https://patchblox.com/security/data/product/windows-app/mongodb.md), the latest version, which also fixes every CVE listed here

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [MongoDB](https://patchblox.com/security/data/product/windows-app/mongodb.md) |  | 8.0.18 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-1849](https://patchblox.com/security/data/cve/CVE-2026-1849.md) | High | Mongod can run out of stack memory when expressions create deeply nested documents | 7.1 | 0.0033 |  |
| [CVE-2026-5170](https://patchblox.com/security/data/cve/CVE-2026-5170.md) | Routine | Users could trigger a crash of mongod primaries during promotion to sharded | 6.0 | 0.0021 |  |

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Data as of 2026-11-10T01:44:33Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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