CVE-2026-9743
CVE-2026-9743 · Aggregation sub-pipeline null dereference may allow DoS via crafted getMore
This page contains facts from public vulnerability sources. Check the original advisory before updating.
In MongoDB Server 8.0, an aggregation stage can leave its _subPipeline field null during processing of certain pipelines. If a getMore is subsequently issued on the same cursor, the server may dereference this null sub-pipeline when reattaching to the operation context, accessing an invalid address and crashing the process. This issue allows an authenticated user who can run aggregation pipelines to cause a denial of service by issuing a specially crafted aggregation followed by getMore on affected versions.
CVSS 7.1 · High · EPSS 0.3% · Fix available
- Published
- Updated
Stack: system
Affected products and versions
mongodb server
- Versions
- ≥ 8.0.0, < 8.0.24: Affected (semver)
Update to 8.0.24
mongodb Ubuntu:Pro:14.04:LTS
- Versions
- 1:2.4.6-0ubuntu5
- 1:2.4.6-0ubuntu6
- 1:2.4.8-1ubuntu1
- 1:2.4.8-2
- 1:2.4.9-1
- 1:2.4.9-1ubuntu1
- 1:2.4.9-1ubuntu2
- 1:2.4.9-1ubuntu2+esm2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
mongodb Ubuntu:Pro:16.04:LTS
- Versions
- 1:2.6.10-0ubuntu1
- 1:2.6.10-0ubuntu1+esm2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
mongodb Ubuntu:Pro:18.04:LTS
- Versions
- 1:3.4.7-1
- 1:3.4.7-1ubuntu1
- 1:3.4.7-1ubuntu2
- 1:3.4.7-1ubuntu4
- 1:3.4.14-3ubuntu1
- 1:3.4.14-3ubuntu2
- 1:3.6.3-0ubuntu1
- 1:3.6.3-0ubuntu1.1
- 1:3.6.3-0ubuntu1.3
- 1:3.6.3-0ubuntu1.4
- 1:3.6.3-0ubuntu1.4+esm1
- 1:3.6.3-0ubuntu1.4+esm2
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published
mongodb Ubuntu:Pro:20.04:LTS
- Versions
- 1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu2
- 1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5
- 1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.2
- 1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3
- 1:3.6.9+really3.6.8+90~g8e540c0b6d-0ubuntu5.3+esm1
- Affected ranges
- ECOSYSTEM: (−∞, +∞)
No fix published