Insufficient validation of Chrome extension identifiers in Raindrop.io Bookmark Manager Web App 5.6.76.0 allows attackers to obtain sensitive user data via a crafted request.

References

• https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/CORS
• https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Origin
• https://github.com/incoggeek/vulnerability-research/tree/master/CVE-2026-31192
• https://support.google.com/chrome_webstore/answer/2664769?hl=en