# CVE-2026-81521: flightctl: The MongoDB Go Driver's client-level bulk write operation may accept a caller-supplied database name containing a res...

CVE-2026-81521 is fixed in 2 products on 1 platform, first by RHSA-2026:68334, released September 17, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-81521
- Priority: High
- CVSS: 7.5 (important)
- EPSS: 0.0024
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 27, 2026

## Description

The MongoDB Go Driver's client-level bulk write operation may accept a caller-supplied database name containing a reserved separator character without escaping it before the name is used to build the target namespace for the operation. An application that passes untrusted input as a database name could therefore have the write directed at a database and collection other than the ones it intended. Only the Client.BulkWrite API is affected.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | alloy opensuse-leap 16.0 | 1.19.2-160000.1.1 | [OPENSUSE-SU-2026:22032-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-22032-1.md) | Oct 6, 2026 |
| Linux | alloy sles 15.7 | 1.19.2-150700.15.29.1 | [SUSE-SU-2026:4408-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-4408-1.md) | Oct 1, 2026 |
| Linux | alloy sles 16.0 | 1.19.2-160000.1.1 | [SUSE-SU-2026:24148-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-24148-1.md) | Oct 6, 2026 |
| Linux | flightctl RHEL 10 | 1.1.4-1.el10em | [RHSA-2026:68334](https://patchblox.com/security/data/fix/linux/rhsa-2026-68334.md) | Sep 17, 2026 |

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Data as of 2026-11-09T19:38:12Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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