{"affected":[{"defaultStatus":"unaffected","product":"AWS MCP Server","source":"CNA: AMZN","vendor":"AWS","versions":[{"status":"affected","version":"N/A","versionType":"custom"}]}],"cveId":"CVE-2026-115845","cwes":["CWE-184"],"description":"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.\n\n\n\nAWS fixed this issue service-side. No customer action is required.","epss":{"date":"2026-11-01","percentile":0.23408,"score":0.00306},"exploits":[],"kev":null,"metrics":[{"score":6.4,"severity":"medium","source":"CNA: AMZN","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},{"score":5.3,"severity":"medium","source":"CNA: AMZN","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N","version":"4.0"}],"modifiedAt":1793627194164,"publishedAt":1792782284790,"references":[{"source":"CNA: AMZN","tags":["vendor-advisory"],"url":"https://aws.amazon.com/security/security-bulletins/2026-149-aws/"}],"remediation":[],"revision":"3d65b99bbbee55eec96b5273d2168da5bd845b360e251d3e9746085cf4f708d6","sources":[{"modifiedAt":1793627194164,"name":"CNA: AMZN","retrievedAt":1793628536795,"url":"https://www.cve.org/CVERecord?id=CVE-2026-115845"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793628544036,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-115845"}],"ssvc":{"assessedAt":1793626960406,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Incomplete validation in the run_script Python sandbox in AWS MCP Server","updatedAt":1793628544036}