CVE-2025-65200

Published Oct 22, 2026 CVSS 3.1 · 9.6 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Arbitrary Code Execution via Crafted templateURL in LocalStack 4.9.2
Type Values Removed Values Added
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'}

cvssV3_1

{'score': 9.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'}

ssvc

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

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

Type Values Removed Values Added
First Time appeared Localstack
Localstack localstack
Vendors & Products Localstack
Localstack localstack
Type Values Removed Values Added
Title Remote Code Execution via Crafted templateURL in LocalStack 4.9.2
Weaknesses CWE-94
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
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 29, 2026, 1:56 AM
Reserved
Nov 18, 2025, 12:00 AM
Status
Awaiting Analysis
Published
Oct 22, 2026, 7:17 PM
Modified
Oct 29, 2026, 2:16 AM