Severity:
CRITICAL RISK
(9.1)
Covert WebFetch Data Exfiltration (CWE-200) in Claude Code
CVE-2026-54316
Analyzed
Vulnerability Type
Category:
Covert Data Exfiltration via Trusted Endpoint Abuse
CWE:
CWE-183;CWE-200;CWE-515
Impact:
Sensitive Data Exfiltration and Policy Bypass
Severity:
CRITICAL RISK
(9.1)
CVSS Version:
3.1
Catch This CVE While Code Is Being Written
Detect vulnerable code directly in pull requests, so CVEs are fixed before merge.
Summary
Affected Context
Exploit Preconditions
Why This Happens
Potential Impact
General Mitigation Guidance
How Teams Detect Issues Like This
Frequently Asked Questions
Source
NDV
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