Description
An issue was discovered in localstack 4.9.2 allowing attackers to execute arbitrary code via crafted content hosted on a web-accessable URL and when passed said URL in the the templateURL to the _localstack/cloudformation/deploy endpoint, the hosted content can get executed in the context of the docker container.
Published: 2026-10-22
Score: 5.4 Medium
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

No solution or workaround provided in the CVE record.

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Tracking

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Advisories

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History

Mon, 26 Oct 2026 19:15:00 +0100

Type Values Removed Values Added
Title Remote Code Execution via Crafted templateURL in LocalStack 4.9.2
Weaknesses CWE-94

Mon, 26 Oct 2026 17:30:00 +0100

Type Values Removed Values Added
Weaknesses CWE-79
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 23 Oct 2026 04:15:00 +0200

Type Values Removed Values Added
First Time appeared Localstack
Localstack localstack
Vendors & Products Localstack
Localstack localstack

Fri, 23 Oct 2026 03:30:00 +0200

Type Values Removed Values Added
Title Remote Code Execution via Crafted templateURL in LocalStack 4.9.2
Weaknesses CWE-94

Thu, 22 Oct 2026 20:30:00 +0200

Type Values Removed Values Added
Description An issue was discovered in localstack 4.9.2 allowing attackers to execute arbitrary code via crafted content hosted on a web-accessable URL and when passed said URL in the the templateURL to the _localstack/cloudformation/deploy endpoint, the hosted content can get executed in the context of the docker container.
References

Subscriptions

Localstack Localstack
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-10-26T15:52:54.301Z

Reserved: 2025-11-18T00:00:00.000Z

Link: CVE-2025-65200

cve-icon Vulnrichment

Updated: 2026-10-26T15:51:57.026Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-22T19:17:32.260

Modified: 2026-10-26T16:17:09.380

Link: CVE-2025-65200

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-26T19:00:08Z

Weaknesses
  • CWE-79

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')