rhsa-2025:22089
Vulnerability from csaf_redhat
Published
2025-11-25 16:06
Modified
2025-11-28 05:32
Summary
Red Hat Security Advisory: Red Hat build of Keycloak 26.2.11 Security Update

Notes

Topic
New Red Hat build of Keycloak 26.2.11 packages are available from the Customer Portal
Details
Red Hat build of Keycloak 26.2.11 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. Security fixes: * Deserialization of Untrusted Data in LDAP User Federation (CVE-2025-13467)
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.


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        "text": "New Red Hat build of Keycloak 26.2.11 packages are available from the Customer Portal",
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        "text": "Red Hat build of Keycloak 26.2.11 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications.\n\nSecurity fixes:\n* Deserialization of Untrusted Data in LDAP User Federation (CVE-2025-13467)",
        "title": "Details"
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        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.",
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          "text": "A flaw was found in Keycloak. Keycloak does not immediately enforce the disabling of the \"Remember Me\" realm setting on existing user sessions. Sessions created while \"Remember Me\" was active retain their extended session lifetime until they expire, overriding the administrator\u0027s recent security configuration change. This is a logic flaw in session management increases the potential window for successful session hijacking or unauthorized long-term access persistence. The flaw lies in the session expiration logic relying on the session-local \"remember-me\" flag without validating the current realm-level configuration.",
          "title": "Vulnerability description"
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          "category": "vendor_fix",
          "date": "2025-11-25T16:06:13+00:00",
          "details": "Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.2.11"
          ],
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            "baseScore": 5.4,
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            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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        }
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      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
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      ],
      "title": "keycloak-server: Too long and not settings compliant session"
    },
    {
      "cve": "CVE-2025-12110",
      "cwe": {
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        "name": "Insufficient Session Expiration"
      },
      "discovery_date": "2025-10-23T13:59:13.455000+00:00",
      "ids": [
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        {
          "category": "description",
          "text": "A flaw was found in Keycloak. An offline session continues to be valid when the offline_access scope is removed from the client. The refresh token is accepted and you can continue to request new tokens for the session. As it can lead to a situation where an administrator removes the scope, and assumes that offline sessions are no longer available, but they are.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "keycloak: org.keycloak:keycloak-services: User can refresh offline session even after client\u0027s offline_access scope was removed",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
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        },
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        },
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          "product_ids": [
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          ],
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        },
        {
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          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
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            "integrityImpact": "LOW",
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    },
    {
      "acknowledgments": [
        {
          "names": [
            "Stefan Kunz"
          ],
          "organization": "cnlab"
        }
      ],
      "cve": "CVE-2025-12150",
      "cwe": {
        "id": "CWE-304",
        "name": "Missing Critical Step in Authentication"
      },
      "discovery_date": "2025-10-24T11:25:25.758000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2406192"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "No description is available for this CVE.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "org.keycloak/keycloak-services: WebAuthn Attestation Statement Verification Bypass",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This issue was rated Low. The vulnerability requires user interaction to manipulate the WebAuthn registration process, has high attack complexity, and limited impact, affecting only policy enforcement within the Keycloak instance. Exploitation does not compromise confidentiality or availability, and the attacker cannot bypass attestation restrictions without either intercepting the registration flow or using a rogue authenticator under user control.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.2.11"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-12150"
        },
        {
          "category": "external",
          "summary": "RHBZ#2406192",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2406192"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-12150",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-12150"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-12150",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-12150"
        }
      ],
      "release_date": "2025-10-28T15:04:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-11-25T16:06:13+00:00",
          "details": "Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.2.11"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2025:22089"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
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            "Red Hat build of Keycloak 26.2.11"
          ]
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      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 3.1,
            "baseSeverity": "LOW",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.2.11"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Low"
        }
      ],
      "title": "org.keycloak/keycloak-services: WebAuthn Attestation Statement Verification Bypass"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Simon Levermann"
          ],
          "organization": "CTS EVENTIM Solutions GmbH"
        }
      ],
      "cve": "CVE-2025-12390",
      "cwe": {
        "id": "CWE-384",
        "name": "Session Fixation"
      },
      "discovery_date": "2025-10-28T13:12:25.841000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2406793"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Keycloak. In Keycloak where a user can accidentally get access to another user\u0027s session if both use the same device and browser. This happens because Keycloak sometimes reuses session identifiers and doesn\u2019t clean up properly during logout when browser cookies are missing. As a result, one user may receive tokens that belong to another user.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "org.keycloak.protocol.oidc.endpoints.LogoutEndpoint: Offline Session takeover due to reused Authentication Session ID",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.2.11"
        ]
      },
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-12390"
        },
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          "category": "external",
          "summary": "RHBZ#2406793",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2406793"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-12390",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-12390"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-12390",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-12390"
        }
      ],
      "release_date": "2025-10-28T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-11-25T16:06:13+00:00",
          "details": "Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.2.11"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2025:22089"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
          "product_ids": [
            "Red Hat build of Keycloak 26.2.11"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 6.0,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N",
            "version": "3.1"
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          "products": [
            "Red Hat build of Keycloak 26.2.11"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "org.keycloak.protocol.oidc.endpoints.LogoutEndpoint: Offline Session takeover due to reused Authentication Session ID"
    },
    {
      "acknowledgments": [
        {
          "names": [
            "Icare \u0026 truff"
          ],
          "organization": "YWH"
        }
      ],
      "cve": "CVE-2025-13467",
      "cwe": {
        "id": "CWE-502",
        "name": "Deserialization of Untrusted Data"
      },
      "discovery_date": "2025-11-20T03:12:47.343000+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2416038"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Keycloak LDAP User Federation provider. This vulnerability allows an authenticated realm administrator to trigger deserialization of untrusted Java objects via a malicious LDAP server configuration.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "org.keycloak.storage.ldap: Keycloak: Deserialization of Untrusted Data in LDAP User Federation",
          "title": "Vulnerability summary"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
        "fixed": [
          "Red Hat build of Keycloak 26.2.11"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2025-13467"
        },
        {
          "category": "external",
          "summary": "RHBZ#2416038",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2416038"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2025-13467",
          "url": "https://www.cve.org/CVERecord?id=CVE-2025-13467"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-13467",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-13467"
        }
      ],
      "release_date": "2025-11-25T00:00:00+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-11-25T16:06:13+00:00",
          "details": "Before applying the update, back up your existing installation, including all applications, configuration files, databases and database settings, and so on.",
          "product_ids": [
            "Red Hat build of Keycloak 26.2.11"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2025:22089"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
          "product_ids": [
            "Red Hat build of Keycloak 26.2.11"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "HIGH",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N",
            "version": "3.1"
          },
          "products": [
            "Red Hat build of Keycloak 26.2.11"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Moderate"
        }
      ],
      "title": "org.keycloak.storage.ldap: Keycloak: Deserialization of Untrusted Data in LDAP User Federation"
    }
  ]
}


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