Open Redirect Affecting @anthropic-ai/claude-code package, versions <1.0.111


Severity

Recommended
0.0
high
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.04% (11th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications

Snyk Learn

Learn about Open Redirect vulnerabilities in an interactive lesson.

Start learning
  • Snyk IDSNYK-JS-ANTHROPICAICLAUDECODE-15202062
  • published4 Feb 2026
  • disclosed3 Feb 2026
  • credit47sid-praetorian

Introduced: 3 Feb 2026

NewCVE-2026-24052  (opens in a new tab)
CWE-601  (opens in a new tab)

How to fix?

Upgrade @anthropic-ai/claude-code to version 1.0.111 or higher.

Overview

@anthropic-ai/claude-code is an Use Claude, Anthropic's AI assistant, right from your terminal. Claude can understand your codebase, edit files, run terminal commands, and handle entire workflows for you.

Affected versions of this package are vulnerable to Open Redirect due to insufficient validation in the startsWith function used for trusted domain verification during WebFetch requests. An attacker can cause automatic requests to attacker-controlled domains by registering domains that bypass the intended validation, potentially leading to unauthorized data exfiltration.

References

CVSS Base Scores

version 4.0
version 3.1