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Amazon Q Developer Flaw Could Let Malicious Repos Run Code via MCP Configs

The Hacker News
CVEVulnerabilityAmazon

Overview

A serious vulnerability in Amazon Q Developer was discovered, allowing malicious repositories to execute commands and potentially steal cloud credentials from developers. This flaw, tracked as CVE-2026-12957, received a CVSS score of 8.5, indicating its severity. The issue stemmed from the way Amazon's AI coding assistant interacted with Model Context Protocol (MCP) servers. Developers could unknowingly expose their credentials simply by opening a compromised repository and trusting its workspace. Amazon has since patched the vulnerability, emphasizing the need for developers to be cautious when dealing with untrusted code repositories.

Key Takeaways

  • Affected Systems: Amazon Q Developer, Model Context Protocol (MCP) servers
  • Action Required: Amazon has patched the vulnerability in Amazon Q Developer.
  • Timeline: Newly disclosed

Original Article Summary

A high-severity flaw in Amazon Q Developer let a malicious repository run commands and steal a developer's cloud credentials. The path was short: a developer opens the repo, trusts the workspace, and Amazon Q does the rest. Amazon has patched it. Tracked as CVE-2026-12957 (CVSS 8.5), the bug sat in how Amazon's AI coding assistant handled Model Context Protocol (MCP) servers. Wiz

Impact

Amazon Q Developer, Model Context Protocol (MCP) servers

Exploitation Status

No active exploitation has been reported at this time. However, organizations should still apply patches promptly as proof-of-concept code may exist.

Timeline

Newly disclosed

Remediation

Amazon has patched the vulnerability in Amazon Q Developer. Users should ensure they are using the latest version of the software to protect against this flaw.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to CVE, Vulnerability, Amazon.

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