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    <lastBuildDate>Mon, 19 Oct 2026 18:35:25 +0000</lastBuildDate>
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      <title>CVE-2025-54136 — Cursor's Modification of MCP Server Definitions Bypasses Manual Re-approvals</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2025-54136</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; cursor&lt;/p&gt;
&lt;p&gt;Cursor is a code editor built for programming with AI. In versions 1.2.4 and below, attackers can achieve remote and persistent code execution by modifying an already trusted MCP configuration file inside a shared GitHub repository or editing the file locally on the target&amp;#39;s machine. Once a collaborator accepts a harmless MCP, the attacker can silently swap it for a malicious command (e.g., calc.exe) without triggering any warning or re-prompt. If an attacker has write permissions on a user&amp;#39;s active branches of a source repository that contains existing MCP servers the user has previously approved, or allows an attacker has arbitrary file-write locally, the attacker can achieve arbitrary code execution. This is fixed in version 1.3.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; cursor&lt;/p&gt;
&lt;p&gt;Cursor is a code editor built for programming with AI. In versions 1.2.4 and below, attackers can achieve remote and persistent code execution by modifying an already trusted MCP configuration file inside a shared GitHub repository or editing the file locally on the target&amp;#39;s machine. Once a collaborator accepts a harmless MCP, the attacker can silently swap it for a malicious command (e.g., calc.exe) without triggering any warning or re-prompt. If an attacker has write permissions on a user&amp;#39;s active branches of a source repository that contains existing MCP servers the user has previously approved, or allows an attacker has arbitrary file-write locally, the attacker can achieve arbitrary code execution. This is fixed in version 1.3.&lt;/p&gt;</content:encoded>
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