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…
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.
Read at NIST National Vulnerability Database (CVE API 2.0)
- Vendor
- Anthropic
- Product
- Claude, AI / LLM tooling
- CVSS
- 6.4
- Exposure class
- AI infrastructure
Why it ranks 8 (Routine)
- CVSS 6.4 medium
- Product class: AI infrastructure
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
- CVE-2026-115845 on this site · NVD · CVE.org · Vulnpedia
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