Amazon Q Developer Flaw Could Let Malicious Repos Run Code via MCP Configs
Article summary
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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
1Key Takeaways
- 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.
- Tracked as CVE-2026-12957 (CVSS 8.5), the bug sat in how Amazon's AI coding assistant handled Model Context Protocol (MCP) servers.
2AIWedia Score
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3Why it matters
Coding AI shifts how fast software ships and how much human review each change needs. The Hacker News reports that a high-severity flaw in Amazon Q Developer let a malicious repository run commands and steal a developer's cloud credentials.
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