VulnerabilitySecurity Week
7.5 — HIGH
Claude Code OAuth Tokens Can Be Stolen Through Stealthy MCP Hijacking
Mitiga researchers say attackers can silently redirect Claude Code MCP traffic, intercept OAuth tokens, and maintain persistent access to connected SaaS platforms. The post Claude Code OAuth Tokens Can Be Stolen Through Stealthy MCP Hijacking appeared first on SecurityWeek.
🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview
Attackers can hijack MCP traffic, intercept OAuth tokens, and maintain persistent access to connected SaaS platforms through stealthy attacks.
⚙️Technical Details
Affected Systems
Claude Code
Attack Vectors
MCP traffic
💥Impact Assessment
Severity: High
Who Is at Risk
Connected SaaS platforms
🛡️Recommended Actions
1Implement OAuth token validation and verification mechanisms.
2Monitor MCP traffic for suspicious activity.
3Regularly review access permissions and revoke unnecessary access.
📦Affected Products
Claude Code
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