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CVE-2026-24052— Claude Code has a Domain Validation Bypass which Allows Automatic Requests to Attacker-Controlled Domains

Quick assessment

Affected
anthropics claude-code
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Claude Code是Anthropic开源的一个代理编码工具。 Claude Code 1.0.111之前版本存在输入验证错误漏洞，该漏洞源于WebFetch请求的受信任域验证机制存在URL验证不足，可能导致数据渗漏。

AI Predicted 5.9 Difficulty: Easy EPSS 0.44% · P36

Possible ATT&CK Techniques 1 AI

T1560.001 · Archive via Utility
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I. Basic Information for CVE-2026-24052

Vulnerability Information
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Vulnerability Title
Claude Code has a Domain Validation Bypass which Allows Automatic Requests to Attacker-Controlled Domains
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Vulnerability Title
Claude Code 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Claude Code是Anthropic开源的一个代理编码工具。 Claude Code 1.0.111之前版本存在输入验证错误漏洞，该漏洞源于WebFetch请求的受信任域验证机制存在URL验证不足，可能导致数据渗漏。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
anthropics claude-code < 1.0.111 -

II. Public POCs for CVE-2026-24052

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III. Intelligence Information for CVE-2026-24052

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Same Patch Batch · anthropics · 2026-02-03 · 3 CVEs total

CVE-2026-24887 Claude Code has a Command Injection in find Command Bypasses User Approval Prompt
CVE-2026-24053 Cluade Code has a Path Restriction Bypass via ZSH Clobber which Allows Arbitrary File Writ

IV. Related Vulnerabilities

Same product: claude-code
Same vendor: anthropics
Same weakness: CWE-601

V. Comments for CVE-2026-24052

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