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CVE-2026-24052

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

Published: Feb 3, 2026Updated: Feb 6, 2026 Sources: CVE List NVD GHSACWE-601
NVD MITRE
7.4CVSSHIGH
EPSS Score
0.3%
Top 74.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:CC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-601

Affected Products

claude-codeanthropics
SaaS
AI / ML / llm-serving-inference
@anthropic-ai/claude-codenpmOSS Libraries
claude codeanthropic
SaaS
AI / ML / llm-serving-inference
anthropicscommercialUSAI / MLaka claude-code, anthropic-sdk-python, anthropic-sdk-typescript
npmpackage-ecosystemOSS Libraries
anthropiccommercialUSAI / MLaka claude

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Initial Access
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References

https://github.com/anthropics/claude-code/security/advisories/GHSA-vhw5-3g5m-8ggf
github.com
https://nvd.nist.gov/vuln/detail/CVE-2026-24052
nvd.nist.gov
https://github.com/anthropics/claude-code
github.com

Timeline

Published
Feb 3, 2026
Last Updated
Feb 6, 2026

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