Claude Code Information Disclosure Vulnerability
Evidence indicates that Claude Code is affected by a security issue. Reported affected versions include 2.1.88.
What Happened
Evidence indicates that Claude Code is affected by a security issue. Reported affected versions include 2.1.88.
Why This Matters
Publisher reporting describes a concrete security event. BugSkan could not yet bind it to a CVE or affected version, so treat the source details as the current record.
Recommended Action
No confirmed vendor remediation is available in the current evidence. Identify deployments of Claude Code matching the evidenced affected versions: 2.1.88.
Exposure
Exposure unknown
Apr 01, 2026 05:30
Exposure reason: This incident does not currently match a technology in My AI Stack.
Exploitation status: UNKNOWN
Affected versions: 2.1.88
Primary entities:
Timeline
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Incident first seen
Apr 01, 2026 05:30BugSkan first recorded this incident.
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Claude Code Source Leaked via npm Packaging Error, Anthropic Confirms - The Hacker News
Apr 01, 2026 05:30thehackernews.com · Data Leak
Sources
thehackernews.com · Apr 01, 2026 05:30
The Claude Code source code was inadvertently leaked due to an npm packaging error, specifically exposing thousands of TypeScript files via a source map file in version 2.1.88. This leak directly enabled bad actors to bypass AI guardrails, conduct supply chain attacks via trojanized npm packages like Axios, and distribute malware such as Vidar Stealer through dependency confusion and fake GitHub repositories.
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