CVE-2026-16763 Security Details

CVE ID

CVE-2026-16763

CWE

CWE-77

CWE-78

CVE 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.

Published

Jul 25, 2026

CVSS Score & Severity

7.3High

CVSS Vector

CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS Score

1.224%

Malware

malware

KEV Status

Not in KEV Catalog: No known exploits

Vulnerable Methods

LocalstackPlugin/startLocalStack/startCompose()

JS

Affected Ecosystems

affected

Source

National Vulnerability Database

References

GitHub · Issue #303PROJECT