CVE-2026-24052

🔴 HIGH

Claude Code is an agentic coding tool. Prior to version 1.0.111, Claude Code contained insufficient URL validation in its trusted domain verification mechanism for WebFetch requests. The application u...

Published
Feb 03, 2026
Last Modified
Feb 06, 2026
Views
5
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Claude Code is an agentic coding tool. Prior to version 1.0.111, Claude Code contained insufficient URL validation in its trusted domain verification mechanism for WebFetch requests. The application used a startsWith() function to validate trusted domains (e.g., docs.python.org, modelcontextprotocol.io), this could have enabled attackers to register domains like modelcontextprotocol.io.example.com that would pass validation. This could enable automatic requests to attacker-controlled domains without user consent, potentially leading to data exfiltration. This issue has been patched in version 1.0.111.

Affected Products (1)

anthropic - claude_code

Version: *

CVSS Scores

CVSS 3.1 7.4
7.4
HIGH
CVSS 2.0 7.4

References

Additional Information

Source
security-advisories@github.com
State
Analyzed

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