Vulnerability library
Security checkDecember 27, 2025

Apollo Embedded Sandbox and Explorer vulnerable to CSRF via window.postMessage origin-validation bypass - @apollo/sandbox

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High severitynpm@apollo/sandbox

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Description

A Cross-Site Request Forgery (CSRF) vulnerability was identified in Apollo’s Embedded Sandbox and Embedded Explorer.

The vulnerability arises from missing origin validation in the client-side code that handles window.postMessage events.

Recommendation

Update the @apollo/sandbox package to the latest compatible version. Followings are version details:

  • Affected version(s): < 2.7.2
  • Patched version(s): 2.7.2

References

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See something that needs correcting? Let us knowUpdated December 27, 2025