{"id":"CVE-2026-32113","title":"Discourse is an open-source discussion platform","summary":"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…","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-601"],"vendor":"discourse","product":"discourse","affected":["discourse >= 2026.1.0, < 2026.1.3","discourse >= 2026.2.0, < 2026.2.2","discourse = 2026.3.0"],"patched":["discourse 2026.2.2"],"published":"2026-03-31","updated":"2026-07-24","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-32113","references":[{"url":"https://github.com/discourse/discourse/commit/080408b93d00305b51d71f63f755f43fa601884d","label":"security-advisories@github.com"},{"url":"https://github.com/discourse/discourse/security/advisories/GHSA-378j-ccw4-4fwh","label":"security-advisories@github.com"},{"url":"https://meta.discourse.org/t/using-discourse-as-a-sso-provider/32974","label":"security-advisories@github.com"},{"url":"https://meta.discourse.org/t/use-discourse-as-an-identity-provider-sso-discourseconnect/32974","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00193,"epssPercentile":0.0931,"ingestedAt":"2026-07-24T20:38:03.284Z","slug":"CVE-2026-32113","body":"## Overview\n\nDiscourse 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.\n\n## Affected\n\n- `discourse >= 2026.1.0, < 2026.1.3`\n- `discourse >= 2026.2.0, < 2026.2.2`\n- `discourse = 2026.3.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `discourse 2026.2.2`","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}