CVE-2026-32113 | BDVDB-2026-323882 Detail
discoursediscourse
Description#
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.
Impact#
Per CVSS v4.0: confidentiality impact none, integrity impact none, availability impact none. Attack vector: network.
Weaknesses#
- CWE-601 URL Redirection to Untrusted Site ('Open Redirect')
References#
- https://github.com/discourse/discourse/security/advisories/GHSA-378j-ccw4-4fwh
- https://github.com/discourse/discourse/commit/080408b93d00305b51d71f63f755f43fa601884d
- https://meta.discourse.org/t/using-discourse-as-a-sso-provider/32974
- https://meta.discourse.org/t/use-discourse-as-an-identity-provider-sso-discourseconnect/32974
Exploit#
History#
- Version 1Record published in the CVE List.
- Version 2Most recent update recorded in the CVE List.