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.

Metrics

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Local

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00703.

Exploitation poc

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Localstack
  • Serverless-localstack

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References
Link Providers
https://github.com/localstack/serverless-localstack/ cve-icon
https://github.com/localstack/serverless-localstack/issues/303 cve-icon
https://vuldb.com/cve/CVE-2026-16763 cve-icon
https://vuldb.com/submit/861028 cve-icon
https://vuldb.com/vuln/382620 cve-icon
https://vuldb.com/vuln/382620/cti cve-icon
History

Fri, 24 Jul 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Thu, 23 Jul 2026 21:45:00 +0000

Type Values Removed Values Added
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.
Title localstack serverless-localstack Configuration index.js os command injection
First Time appeared Localstack
Localstack serverless-localstack
Weaknesses CWE-77
CWE-78
CPEs cpe:2.3:a:localstack:serverless-localstack:*:*:*:*:*:*:*:*
Vendors & Products Localstack
Localstack serverless-localstack
References
Metrics cvssV2_0

{'score': 4.3, 'vector': 'AV:L/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 5.3, 'vector': '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'}

cvssV3_1

{'score': 5.3, 'vector': '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'}

cvssV4_0

{'score': 4.8, 'vector': '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'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-07-24T13:39:45.705Z

Reserved: 2026-07-23T14:06:33.140Z

Link: CVE-2026-16763

cve-icon Vulnrichment

Updated: 2026-07-24T13:39:41.877Z

cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

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