{"id":217446,"date":"2026-02-25T16:39:00","date_gmt":"2026-02-25T21:39:00","guid":{"rendered":"https:\/\/news-you-need.com\/index.php\/2026\/02\/25\/untrusted-repositories-turn-claude-code-into-an-attack-vector\/"},"modified":"2026-02-25T18:05:31","modified_gmt":"2026-02-25T23:05:31","slug":"untrusted-repositories-turn-claude-code-into-an-attack-vector","status":"publish","type":"post","link":"https:\/\/news-you-need.com\/index.php\/2026\/02\/25\/untrusted-repositories-turn-claude-code-into-an-attack-vector\/","title":{"rendered":"Untrusted repositories turn Claude code into an attack vector"},"content":{"rendered":"

Untrusted repositories turn Claude code into an attack vector<\/a><\/p>\n

https:\/\/securityaffairs.com\/188508\/security\/untrusted-repositories-turn-claude-code-into-an-attack-vector.html?amp<\/a><\/p>\n

Publish Date: 2026-02-25 16:39:00<\/a><\/p>\n

Source Domain: securityaffairs.com<\/a><\/p>\n

Untrusted repositories turn Claude code into an attack vector<\/h2>\n<\/p>\n

\t\t\t\t\t\t\t Pierluigi Paganini<\/span>
\n\t\t\t\t\t\t\t\"\"\/ February 25, 2026<\/span><\/p>\n

\t\t\t\t\t\t\"\"\/<\/p>\n

Flaws in Anthropic\u2019s Claude Code could allow remote code execution and theft of API keys when users open untrusted repositories.<\/h2>\n

Check Point Research team found multiple vulnerabilities in Anthropic\u2019s Claude Code AI coding assistant that could lead to remote code execution and API key theft. The vulnerabilities abuse features such as Hooks, MCP servers, and environment variables to run arbitrary shell commands and exfiltrate Anthropic API credentials when users clone and open untrusted repositories.<\/p>\n

\u201cCritical vulnerabilities, CVE-2025-59536 and CVE-2026-21852, in Anthropic\u2019s Claude Code enabled remote code execution and API key theft through malicious repository-level configuration files, triggered simply by cloning and opening an untrusted project.\u201d reads the report\u00a0published by Check Point Research.<\/p>\n

\u201cBuilt-in mechanisms\u2014including Hooks, MCP integrations, and environment variables\u2014could be abused to bypass trust controls, execute hidden shell commands, and redirect authenticated API traffic before user consent\u201d<\/p>\n

Researchers found that Claude Code\u2019s project-level configuration files can act as an execution layer, allowing the attackers to abuse a single malicious repository as an attack vector. Simply cloning and opening a crafted repo could trigger hidden commands, bypass consent safeguards, steal Anthropic API keys, and pivot from a developer\u2019s workstation into shared enterprise cloud environments, without visible warning.<\/p>\n

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