PT-2026-21840 · Repostat · Repostat

Denpiligrim · Published 2026-02-25 · Updated 2026-02-25 · CVE-2026-27612

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Repostat versions prior to 1.0.1

Description Repostat, a React component used to display GitHub repository information, contains a Reflected Cross-Site Scripting (XSS) issue. The RepoCard component previously used dangerouslySetInnerHTML to render the repository name (repo prop) during the loading state without proper sanitization. This allowed for the execution of arbitrary JavaScript in a user's browser if an attacker could control the input passed into the repo prop. The issue was addressed in version 1.0.1 by removing the use of dangerouslySetInnerHTML and utilizing standard React JSX data binding for safe rendering.

Recommendations Update Repostat to version 1.0.1 or later.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-27612

GHSA-FM8C-6M29-RP6J

Affected Products

Repostat

References · 10

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27612.json · Exploit
• https://github.com/denpiligrim/repostat/security/advisories/GHSA-fm8c-6m29-rp6j · Vendor Advisory
• https://github.com/denpiligrim/repostat/commit/715df5f73359d222fd7876e948d14290180e3c88 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-27612 · Security Note
• https://osv.dev/vulnerability/CVE-2026-27612 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-fm8c-6m29-rp6j · Vendor Advisory
• https://github.com/denpiligrim/repostat · Note
• https://t.me/cveNotify/153093 · Telegram Post
• https://twitter.com/VulmonFeeds/status/2026583896410783885 · Twitter Post
• https://twitter.com/CVEnew/status/2026641367762399520 · Twitter Post