CVSS 6.1 · Medium EPSS 0,34%
Kerentanan URL Redirection to Untrusted Site ('Open Redirect') pada discourse. Skor CVSS 3.1 6.1 (Medium) menurut NVD.
Discourse is an open-source discussion platform. From versions 2026.1.0-latest to before 2026.1.3, 2026.2.0-latest to before 2026.2.2, and 2026.3.0-latest to before 2026.3.0, the enter action in StaticController reads the sso_destination_url cookie and redirects to it with allow_other_host: true without validating the destination URL. While this cookie is normally set during legitimate DiscourseConnect Provider flows with cryptographically validated SSO payloads, cookies are client-controlled and can be set by attackers. This issue has been patched in versions 2026.1.3, 2026.2.2, and 2026.3.0.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| discourse | discourse | Versi 2026.1.0 hingga sebelum 2026.1.3 |
| discourse | discourse | Versi 2026.2.0 hingga sebelum 2026.2.2 |
| discourse | discourse | Versi 2026.3.0 |