{"id":"CVE-2025-65200","title":"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…","summary":"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…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","cvssSource":"adp","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-26T15:52:51.618697Z"},"published":"2026-10-22","updated":"2026-10-26","sourceUpdated":"2026-10-26T15:52:54.301Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-65200","references":[{"url":"http://localstack.com"},{"url":"https://github.com/localstack/localstack/blob/aba1ee84592d76f0a88dd286fcd83b65080e31ac/localstack-core/localstack/services/cloudformation/deploy_ui.py"},{"url":"https://github.com/localstack/localstack/pull/13293/"},{"url":"https://cyberroute.github.io/post/2025-12-11-localstack-hack/"}],"tags":["cve.org"],"epss":0.00346,"epssPercentile":0.27948,"ingestedAt":"2026-10-22T22:00:50.362Z","slug":"CVE-2025-65200","body":"## Overview\n\nAn 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":229640,"id":"CVE-2025-65200","ts":1793032368307,"field":"cvss","old":null,"new":"5.4"},{"seq":229639,"id":"CVE-2025-65200","ts":1793032368307,"field":"severity","old":"none","new":"medium"}]}