Vulnerability Description
Bruno is an open source IDE for exploring and testing APIs. Prior to 1.39.1, the custom tool-tip components which internally use react-tooltip were setting the content (in this case the Environment name) as raw HTML which then gets injected into DOM on hover. This, combined with loose Content Security Policy restrictions, allowed any valid HTML text containing inline script to get executed on hovering over the respective Environment's name. This vulnerability's attack surface is limited strictly to scenarios where users import collections from untrusted or malicious sources. The exploit requires deliberate action from the user—specifically, downloading and opening an externally provided malicious Bruno or Postman collection export and the user hovers on the environment name. This vulnerability is fixed in 1.39.1.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Usebruno | Bruno | < 1.39.1 |
Related Weaknesses (CWE)
References
- https://github.com/usebruno/bruno/security/advisories/GHSA-fqxc-cxph-9vq8ExploitMitigationVendor Advisory
FAQ
What is CVE-2025-30210?
CVE-2025-30210 is a vulnerability with a CVSS score of 6.1 (MEDIUM). Bruno is an open source IDE for exploring and testing APIs. Prior to 1.39.1, the custom tool-tip components which internally use react-tooltip were setting the content (in this case the Environment na...
How severe is CVE-2025-30210?
CVE-2025-30210 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-30210?
Check the references section above for vendor advisories and patch information. Affected products include: Usebruno Bruno.