Headline
GHSA-mh85-44c2-3m97: Grav is vulnerable to Stored XSS through authenticated user-edited content
grav before v1.7.49.5 has a Stored Cross-Site Scripting (Stored XSS) vulnerability in the page editing functionality. An authenticated low-privileged user with permission to edit content can inject malicious JavaScript payloads into editable fields. The payload is stored on the server and later executed when any other user views or edits the affected page.
- GitHub Advisory Database
- GitHub Reviewed
- CVE-2025-66843
Grav is vulnerable to Stored XSS through authenticated user-edited content
Moderate severity GitHub Reviewed Published Dec 15, 2025 to the GitHub Advisory Database • Updated Dec 17, 2025
Package
Affected versions
<= 1.7.49.5
grav before v1.7.49.5 has a Stored Cross-Site Scripting (Stored XSS) vulnerability in the page editing functionality. An authenticated low-privileged user with permission to edit content can inject malicious JavaScript payloads into editable fields. The payload is stored on the server and later executed when any other user views or edits the affected page.
References
- https://nvd.nist.gov/vuln/detail/CVE-2025-66843
- Yohane-Mashiro/grav_cve#1
Published to the GitHub Advisory Database
Dec 15, 2025
Last updated
Dec 17, 2025