CVE-2026-37980

<!-- PoC Concept for CVE-2026-37980 Attacker sets the organization.alias to the following payload: --> ');alert(document.cookie);// <!-- Explanation: The vulnerable code likely looks like: <button onclick="selectOrganization('$ALIAS')"> When the payload is injected, it becomes: <button onclick="selectOrganization('');alert(document.cookie);//')"> This breaks out of the string context and executes the alert. -->

{"cve": {"id": "CVE-2026-37980", "sourceIdentifier": "[email protected]", "published": "2026-04-14T15:16:34.230", "lastModified": "2026-04-17T15:11:03.923", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "A flaw was found in Keycloak, specifically in the organization selection login page. A remote attacker with `manage-realm` or `manage-organizations` administrative privileges can exploit a Stored Cross-Site Scripting (XSS) vulnerability. This flaw occurs because the `organization.alias` is placed into an inline JavaScript `onclick` handler, allowing a crafted JavaScript payload to execute in a user's browser when they view the login page. Successful exploitation enables arbitrary JavaScript execution, potentially leading to session theft, unauthorized account actions, or further attacks against users of the affected realm."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Primary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:N", "baseScore": 6.9, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.7, "impactScore": 4.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-37980", "source": "[email protected]"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455325", "source": "[email protected]"}]}}