CVE-2025-12390— Org.keycloak.protocol.oidc.endpoints.logoutendpoint: offline session takeover due to reused authentication session id
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I. Basic Information for CVE-2025-12390
Vulnerability Information
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Vulnerability Title
Org.keycloak.protocol.oidc.endpoints.logoutendpoint: offline session takeover due to reused authentication session id
Source: NVD (National Vulnerability Database)
Vulnerability Description
A flaw was found in Keycloak. In Keycloak where a user can accidentally get access to another user's session if both use the same device and browser. This happens because Keycloak sometimes reuses session identifiers and doesn’t clean up properly during logout when browser cookies are missing. As a result, one user may receive tokens that belong to another user.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
会话固定
Source: NVD (National Vulnerability Database)
Vulnerability Title
Red Hat build of Keycloak 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat build of Keycloak是美国红帽（Red Hat）公司的一款用于单点登录的Web应用。 Red Hat build of Keycloak存在授权问题漏洞，该漏洞源于会话标识符重用和注销时未正确清理，可能导致用户意外获取其他用户的会话令牌。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Keycloak | keycloak | 0 ~ 26.0.0 | - | |
| Red Hat | Red Hat build of Keycloak 26.2 | 26.2.11-1 ~ * | cpe:/a:redhat:build_keycloak:26.2::el9 | |
| Red Hat | Red Hat build of Keycloak 26.2 | 26.2-12 ~ * | cpe:/a:redhat:build_keycloak:26.2::el9 | |
| Red Hat | Red Hat build of Keycloak 26.2 | 26.2-12 ~ * | cpe:/a:redhat:build_keycloak:26.2::el9 | |
| Red Hat | Red Hat build of Keycloak 26.2.11 | - | cpe:/a:redhat:build_keycloak:26.2::el9 | |
| Red Hat | Red Hat build of Keycloak 26.4 | 26.4.4-1 ~ * | cpe:/a:redhat:build_keycloak:26.4::el9 | |
| Red Hat | Red Hat build of Keycloak 26.4 | 26.4-3 ~ * | cpe:/a:redhat:build_keycloak:26.4::el9 | |
| Red Hat | Red Hat build of Keycloak 26.4 | 26.4-3 ~ * | cpe:/a:redhat:build_keycloak:26.4::el9 | |
| Red Hat | Red Hat build of Keycloak 26.4.4 | - | cpe:/a:redhat:build_keycloak:26.4::el9 |
II. Public POCs for CVE-2025-12390
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|---|
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IV. Related Vulnerabilities
Same product: keycloak
- CVE-2025-12150
Org.keycloak/keycloak-services: webauthn attestation stateme - CVE-2025-13467
Org.keycloak.storage.ldap: keycloak: deserialization of untr - CVE-2025-11538
Keycloak-server: debug default bind address - CVE-2025-10939
Org.keycloak/keycloak-quarkus-server: unable to restrict acc - CVE-2025-12110
Keycloak: org.keycloak:keycloak-services: user can refresh o
Same vendor: Keycloak
- CVE-2025-12150
Org.keycloak/keycloak-services: webauthn attestation stateme - CVE-2025-13467
Org.keycloak.storage.ldap: keycloak: deserialization of untr - CVE-2025-11538
Keycloak-server: debug default bind address - CVE-2025-10939
Org.keycloak/keycloak-quarkus-server: unable to restrict acc - CVE-2025-12110
Keycloak: org.keycloak:keycloak-services: user can refresh o
Same weakness: CWE-384
- CVE-2025-46605
Dell PowerProtect Data Domain（Dell PowerProtect DD） 安全漏洞 - CVE-2026-31940
Session Fixation in Chamilo LMS - CVE-2026-33946
MCP Ruby SDK: Insufficient Session Binding Allows SSE Stream - CVE-2026-33757
OpenBao lacks user confirmation for OIDC direct callback mod - CVE-2026-25101
Session Fixation in Bludit
V. Comments for CVE-2025-12390
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