Published Oct 23, 2026Sources checked Oct 23, 2026
6.4MEDIUMCVSS out of 10
What this means
Review the available evidence
CVE-2026-115845 and is rated Medium severity with a CVSS score of 6.4. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
CISA KEVNot listedBased on the latest collected catalog
EPSSUnavailableNo current score collected
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview
What is CVE-2026-115845?
An incomplete list of disallowed inputs in the Python code validator of the run_script tool in AWS MCP Server might allow an authenticated remote user to execute arbitrary code within their own isolated session environment via a crafted script.
AWS fixed this issue service-side. No customer action is required.