GHSA-vhw5-3g5m-8ggf
Suggest an improvement- Source
- https://github.com/advisories/GHSA-vhw5-3g5m-8ggf
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/02/GHSA-vhw5-3g5m-8ggf/GHSA-vhw5-3g5m-8ggf.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-vhw5-3g5m-8ggf
- Aliases
-
- CVE-2026-24052
- Published
- 2026-02-03T19:15:59Z
- Modified
- 2026-02-03T22:34:25.409039Z
- Severity
-
- 7.1 (High) CVSS_V4 - 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 CVSS Calculator
- Summary
- Claude Code has a Domain Validation Bypass which Allows Automatic Requests to Attacker-Controlled Domains
- Details
-
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 likemodelcontextprotocol.io.example.comthat would pass validation. This could enable automatic requests to attacker-controlled domains without user consent, potentially leading to data exfiltration.Users on standard Claude Code auto-update have received this fix already. Users performing manual updates are advised to update to the latest version.
Thank you to hackerone.com/47sid-praetorian for reporting this issue!
- Database specific
{ "github_reviewed": true, "severity": "HIGH", "nvd_published_at": "2026-02-03T21:16:13Z", "cwe_ids": [ "CWE-601" ], "github_reviewed_at": "2026-02-03T19:15:59Z" }- References
Affected packages
npm / @anthropic-ai/claude-code
Package
- Name
- @anthropic-ai/claude-code
- View open source insights on deps.dev
- Purl
- pkg:npm/%40anthropic-ai/claude-code