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    <lastBuildDate>Wed, 07 Oct 2026 10:48:31 +0000</lastBuildDate>
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      <title>CVE-2026-49986 — Cortex has Untrusted Project Bootstrap Code Execution via `CLAUDE_PROJECT_DIR`</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2026-49986</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; cdeust Cortex&lt;/p&gt;
&lt;p&gt;The Cortex MCP server (`neuro-cortex-memory`), a cross-platform persistent memory MCP, prior to version 3.17.1 treats the `CLAUDE_PROJECT_DIR` environment variable — automatically set by Claude Code to the currently open project directory — as a trusted Cortex developer checkout. When the `open_visualization` tool is invoked, `_find_dev_source()` resolves the user&amp;#39;s active project directory as a candidate Cortex source root. The only validation performed by `_is_cortex_root()` is a check for the presence of an `mcp_server/` subdirectory and a `ui/unified-viz.html` file. An attacker who places these two marker files in a malicious repository can cause Cortex to execute an arbitrary `mcp_server/server/visualize_bootstrap.py` from that directory via `subprocess.run([sys.executable, ...])`, achieving code execution with the privileges of the victim&amp;#39;s local user process. Version 3.17.1 fixes the issue.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; cdeust Cortex&lt;/p&gt;
&lt;p&gt;The Cortex MCP server (`neuro-cortex-memory`), a cross-platform persistent memory MCP, prior to version 3.17.1 treats the `CLAUDE_PROJECT_DIR` environment variable — automatically set by Claude Code to the currently open project directory — as a trusted Cortex developer checkout. When the `open_visualization` tool is invoked, `_find_dev_source()` resolves the user&amp;#39;s active project directory as a candidate Cortex source root. The only validation performed by `_is_cortex_root()` is a check for the presence of an `mcp_server/` subdirectory and a `ui/unified-viz.html` file. An attacker who places these two marker files in a malicious repository can cause Cortex to execute an arbitrary `mcp_server/server/visualize_bootstrap.py` from that directory via `subprocess.run([sys.executable, ...])`, achieving code execution with the privileges of the victim&amp;#39;s local user process. Version 3.17.1 fixes the issue.&lt;/p&gt;</content:encoded>
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