Discourse: Open redirect via `sso_destination_url` cookie in `enter`_CVE-2026-32113

{
    "lastseen": "",
    "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.",
    "published": "2026-03-31T17:39:25.820Z",
    "modified": "2026-04-01T13:56:12.868Z",
    "type": "cve",
    "title": "Discourse: Open redirect via `sso_destination_url` cookie in `enter`",
    "source": "GitHub_M",
    "references": "https://github.com/discourse/discourse/security/advisories/GHSA-378j-ccw4-4fwh\nhttps://github.com/discourse/discourse/commit/080408b93d00305b51d71f63f755f43fa601884d\nhttps://meta.discourse.org/t/using-discourse-as-a-sso-provider/32974",
    "id": "CVE-2026-32113",
    "bulletinFamily": "",
    "cwe": [
        "CWE-601"
    ],
    "cvelist": null,
    "sourceData": "discourse discourse >= 2026.1.0-latest, < 2026.1.3\ndiscourse discourse >= 2026.2.0-latest, < 2026.2.2\ndiscourse discourse >= 2026.3.0-latest, < 2026.3.0",
    "sourceHref": "",
    "cvss": {
        "score": 5.1,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
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        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
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            "privilegesRequired": "",
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "discourse",
    "version": ">= 2026.1.0-latest, < 2026.1.3",
    "vendor": "discourse",
    "ai_description": "",
    "ai_severity": "",
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    "ai_score": 0
}