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{"bugzilla": {"description": "org.keycloak.forms.login: keycloak: Keycloak: Arbitrary code execution via Stored Cross-Site Scripting (XSS) in organization selection login page", "id": "2455325", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2455325"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:L/A:N", "status": "draft"}, "cwe": "CWE-79", "details": ["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."], "mitigation": {"lang": "en:us", "value": "Restrict access to the Keycloak administration console and login pages to trusted networks only, ideally through a VPN or by configuring firewall rules. Furthermore, ensure that only highly trusted administrators are granted `manage-realm` or `manage-organizations` privileges within Keycloak. Regularly review and audit administrative accounts and their assigned roles to minimize the risk of unauthorized access and exploitation. If the Keycloak service is restarted or reloaded, these network and access restrictions will persist."}, "name": "CVE-2026-37980", "package_state": [{"cpe": "cpe:/a:redhat:build_keycloak:", "fix_state": "Affected", "package_name": "rhbk/keycloak-rhel9", "product_name": "Red Hat Build of Keycloak"}], "public_date": "2026-04-06T12:34:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-37980\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-37980"], "statement": "This vulnerability has Moderate impact. A Stored Cross-Site Scripting (XSS) flaw in the organization selection login page of Red Hat Build of Keycloak (RHBK) allows an attacker with `manage-realm` or `manage-organizations` privileges to inject a crafted JavaScript payload. This payload executes in the context of a user's browser when the login page is viewed, potentially leading to session theft or further attacks.", "threat_severity": "Moderate"}

{"analysis": {"en": {"generated_at": "2026-04-14T16:35:36.926606+00:00", "value": {"mitigation_remediation": ["Apply the latest Red Hat build of Keycloak that contains the CVE-2026-37980 fix.", "Restrict access to the Keycloak administration console and login pages to trusted networks only, ideally through a VPN or firewall rules.", "Ensure that only highly trusted administrators are granted manage-realm or manage-organizations privileges within Keycloak.", "Regularly review and audit administrative accounts and their assigned roles to minimize risk."], "summary": {"action": "Restrict Access", "impact": "Arbitrary Code Execution via Stored XSS"}, "threat_synthesis": {"affected_systems": "Red Hat Build of Keycloak is affected. No specific version information is provided in the advisory.", "description_and_impact": "A flaw was found in Keycloak\u2019s organization selection login page. An attacker who has manage-realm or manage-organizations privileges can inject a crafted JavaScript payload because the organization.alias value is inserted directly into an inline onclick handler. When a user visits the login page the payload runs in their browser, allowing arbitrary script execution and enabling session theft, unauthorized account actions, or further attacks against users of the affected realm.", "risk_and_exploitability": "The CVSS base score is 6.9, indicating a moderate risk. Exploitation requires the attacker to possess privileged administrative permissions and to create a malicious organization alias. The vulnerability is not listed in the CISA KEV catalog and no EPSS score is available, suggesting the public exploit landscape is currently limited. Nevertheless, because arbitrary JavaScript can be executed in logged\u2011in users, the potential impact on confidentiality, integrity, and availability is significant for systems that rely on Keycloak for authentication."}}}}, "created": "2026-04-14T16:37:16.146965+00:00", "updated": "2026-04-14T16:37:16.146998+00:00", "vendors": []}