Vulnerability Description
Repostat is a React component to fetch and display GitHub repository info. Prior to version 1.0.1, the `RepoCard` component is vulnerable to Reflected Cross-Site Scripting (XSS). The vulnerability occurs because the component uses React's `dangerouslySetInnerHTML` to render the repository name (`repo` prop) during the loading state without any sanitization. If a developer using this package passes unvalidated user input directly into the `repo` prop (for example, reading it from a URL query parameter), an attacker can execute arbitrary JavaScript in the context of the user's browser. In version 1.0.1, the use of dangerouslySetInnerHTML has been removed, and the repo prop is now safely rendered using standard React JSX data binding, which automatically escapes HTML entities.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Denpiligrim | Repostat | < 1.0.1 |
Related Weaknesses (CWE)
References
- https://github.com/denpiligrim/repostat/commit/715df5f73359d222fd7876e948d142901Patch
- https://github.com/denpiligrim/repostat/security/advisories/GHSA-fm8c-6m29-rp6jExploitVendor Advisory
FAQ
What is CVE-2026-27612?
CVE-2026-27612 is a vulnerability with a CVSS score of 6.1 (MEDIUM). Repostat is a React component to fetch and display GitHub repository info. Prior to version 1.0.1, the `RepoCard` component is vulnerable to Reflected Cross-Site Scripting (XSS). The vulnerability occ...
How severe is CVE-2026-27612?
CVE-2026-27612 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-2026-27612?
Check the references section above for vendor advisories and patch information. Affected products include: Denpiligrim Repostat.