CVE-2025-65200
An issue was discovered in localstack 4.9.2 allowing attackers to execute arbitrary code via…
- Risk score
- 68/100
- CVSS
- 9.6 v3.1
- Exploit chance (30 days)
- 0.3%
- Published
- 22 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- A critical vulnerability in Localstack 4.9.2 allows attackers to execute arbitrary code via crafted content hosted on a web-accessible URL. This can be exploited by passing the URL in the templateURL to the _localstack/cloudformation/deploy endpoint.
- Affected
- {'product': 'Localstack', 'version': '4.9.2'}
- Fix
- Check the linked advisory for a fix, as none is provided in the record.
- Exploitation
- Public proof of concept
Why it is Amber
- CVSS 9.6 critical
- Remotely exploitable without logging in
References
Original 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.
Last activity 22 Oct 2026. Patch Forecast updates every hour.