CVE-2026-16763

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.

CVSS 4.0

1.9CVSS: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

CVSS 3.1

5.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

EPSS

1.2% chance of exploitation in the next 30 days; higher than 68% of CVEs (scores of 2026-10-25)

CWEs

CWE-77, CWE-78

Published

2026-07-23

Modified

2026-10-24

Record from

the NVD, synced 2026-10-24

References

• https://github.com/localstack/serverless-localstack/
• https://github.com/localstack/serverless-localstack/issues/303
• https://vuldb.com/cve/CVE-2026-16763
• https://vuldb.com/submit/861028
• https://vuldb.com/vuln/382620

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