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CVE-2026-16584 is a security policy bypass vulnerability in AWS API MCP Server affecting versions 0.2.13 through 1.3.46. The flaw stems from improper handling of a failure during server startup while initializing the data required for security policy enforcement. If this initialization step fails, the server continues running instead of failing closed, and the per-request policy enforcement logic is skipped for the lifetime of the process. As a result, user-configured policy restrictions intended to deny or gate specific AWS API operations are not enforced. The issue does not bypass or alter AWS IAM authorization; requests are still constrained by the permissions attached to the configured credentials.
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No public exploit code observed for this vulnerability.
7 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.