denpiligrim repostat up to 1.0.0 RepoCard cross site scripting

Summaryinfo

A vulnerability was found in denpiligrim repostat up to 1.0.0. It has been rated as problematic. The impacted element is an unknown function of the component RepoCard. Performing a manipulation results in cross site scripting. This vulnerability is cataloged as CVE-2026-27612. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in denpiligrim repostat up to 1.0.0. It has been classified as problematic. This affects an unknown function of the component RepoCard. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

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.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-27612 since 02/20/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

Upgrading to version 1.0.1 eliminates this vulnerability. Applying the patch 715df5f73359d222fd7876e948d14290180e3c88 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Vendor

• denpiligrim

Name

• repostat

Version

• 1.0

License

• open-source

Website

• Product: https://github.com/denpiligrim/repostat/

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