CVE-2026-16763
localstack serverless-localstack Configuration index.js os command injection
- State
- Published
- Severity
- 4.8 Medium
- Published
- Jul 23, 2026
- Updated
- Jul 24, 2026
- Reserved
- Jul 23, 2026
Description
A vulnerability was identified in localstack serverless-localstack up to 1.4.0. The affected element is an unknown function of the file src/index.js of the component Configuration Handler. The manipulation of the argument custom.localstack.docker.compose_file leads to os command injection. An attack has to be approached locally. The exploit is publicly available and might be used. The project was informed of the problem early through an issue report but has not responded yet.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P | VulDB |
| 3.1 | 5.3 Medium | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R | VulDB |
| 3.0 | 5.3 Medium | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R | VulDB |
| 2.0 | 4.3 Medium | AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
serverless-localstacklocalstack |
|
References
- VDB-382620 | localstack serverless-localstack Configuration index.js os command injectionvdb-entrytechnical-description
- VDB-382620 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
- CVE-2026-16763 | CVE Analysis and Reportthird-party-advisory
- Submit #861028 | Node.js serverless-localstack 1.4.0 OS Command Injectionthird-party-advisory
- https://github.com/localstack/serverless-localstack/issues/303exploitissue-tracking
- https://github.com/localstack/serverless-localstack/product
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