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CVE-2026-93998

Red Hat build of Keycloak 26.4 · Vulnerability

CVSS 3.1 7.4 HIGHCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-93998

Published

A flaw was found in the SAML adapter component of Keycloak, which is used to secure applications with SAML-based authentication. The adapter fails to verify that the issuer of a signed SAML assertion matches the expected identity provider configured for the application. If multiple identity providers share the same trusted signing key, an attacker who controls one of those providers can create a validly signed assertion to log into the application as any user, potentially gaining full administrative control.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-93998

Published

rhbk/keycloak-operator-bundle

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.4",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "rhbk/keycloak-operator-bundle",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "26.4.17-2",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.4::el9"
                    ]
                }

rhbk/keycloak-rhel9

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.4",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "rhbk/keycloak-rhel9",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "26.4-29",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.4::el9"
                    ]
                }

rhbk/keycloak-rhel9-operator

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.4",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "rhbk/keycloak-rhel9-operator",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "26.4-30",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.4::el9"
                    ]
                }

keycloak-core

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.4.17",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "defaultStatus": "unaffected",
                    "packageName": "keycloak-core",
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.4::el9"
                    ]
                }

keycloak/rhbk-openshift-rhel9

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.4.17",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "defaultStatus": "unaffected",
                    "packageName": "keycloak/rhbk-openshift-rhel9",
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.4::el9"
                    ]
                }

keycloak/rhbk-rhel9-operator

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.4.17",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "defaultStatus": "unaffected",
                    "packageName": "keycloak/rhbk-rhel9-operator",
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.4::el9"
                    ]
                }

rhbk/keycloak-rhel9

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.4.17",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "defaultStatus": "unaffected",
                    "packageName": "rhbk/keycloak-rhel9",
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.4::el9"
                    ]
                }

rhbk/keycloak-rhel9-operator

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.4.17",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "defaultStatus": "unaffected",
                    "packageName": "rhbk/keycloak-rhel9-operator",
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.4::el9"
                    ]
                }

rhbk/keycloak-operator-bundle

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.6",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "rhbk/keycloak-operator-bundle",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "26.6.8-2",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.6::el9"
                    ]
                }

rhbk/keycloak-rhel9

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.6",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "rhbk/keycloak-rhel9",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "26.6-24",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.6::el9"
                    ]
                }

rhbk/keycloak-rhel9-operator

https://catalog.redhat.com/software/containers/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.6",
                    "collectionURL": "https://catalog.redhat.com/software/containers/",
                    "packageName": "rhbk/keycloak-rhel9-operator",
                    "defaultStatus": "affected",
                    "versions": [
                        {
                            "version": "26.6-24",
                            "lessThan": "*",
                            "versionType": "rpm",
                            "status": "unaffected"
                        }
                    ],
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.6::el9"
                    ]
                }

keycloak-core

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.6.8",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "defaultStatus": "unaffected",
                    "packageName": "keycloak-core",
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.6::el9"
                    ]
                }

keycloak/rhbk-openshift-rhel9

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.6.8",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "defaultStatus": "unaffected",
                    "packageName": "keycloak/rhbk-openshift-rhel9",
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.6::el9"
                    ]
                }

keycloak/rhbk-rhel9-operator

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.6.8",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "defaultStatus": "unaffected",
                    "packageName": "keycloak/rhbk-rhel9-operator",
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.6::el9"
                    ]
                }

rhbk/keycloak-rhel9

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.6.8",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "defaultStatus": "unaffected",
                    "packageName": "rhbk/keycloak-rhel9",
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.6::el9"
                    ]
                }

rhbk/keycloak-rhel9-operator

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat build of Keycloak 26.6.8",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "defaultStatus": "unaffected",
                    "packageName": "rhbk/keycloak-rhel9-operator",
                    "cpes": [
                        "cpe:/a:redhat:build_keycloak:26.6::el9"
                    ]
                }

keycloak-core

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat AMQ Broker 7",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "keycloak-core",
                    "defaultStatus": "unaffected",
                    "cpes": [
                        "cpe:/a:redhat:amq_broker:7"
                    ]
                }

keycloak-core

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Fuse 7",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "keycloak-core",
                    "defaultStatus": "unaffected",
                    "cpes": [
                        "cpe:/a:redhat:jboss_fuse:7"
                    ]
                }

jboss-eap-7/eap74-els-openjdk11-openshift-rhel8

https://access.redhat.com/jbossnetwork/restricted/listSoftware.html

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat JBoss Enterprise Application Platform 7",
                    "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
                    "packageName": "jboss-eap-7/eap74-els-openjdk11-openshift-rhel8",
                    "defaultStatus": "unaffected",
                    "cpes": [
                        "cpe:/a:redhat:jboss_enterprise_application_platform:7"
                    ]
                }

jboss-eap-7/eap74-els-openjdk17-openshift-rhel8

https://access.redhat.com/jbossnetwork/restricted/listSoftware.html

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat JBoss Enterprise Application Platform 7",
                    "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
                    "packageName": "jboss-eap-7/eap74-els-openjdk17-openshift-rhel8",
                    "defaultStatus": "unaffected",
                    "cpes": [
                        "cpe:/a:redhat:jboss_enterprise_application_platform:7"
                    ]
                }

jboss-eap-7/eap74-els-openjdk8-openshift-rhel8

https://access.redhat.com/jbossnetwork/restricted/listSoftware.html

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat JBoss Enterprise Application Platform 7",
                    "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
                    "packageName": "jboss-eap-7/eap74-els-openjdk8-openshift-rhel8",
                    "defaultStatus": "unaffected",
                    "cpes": [
                        "cpe:/a:redhat:jboss_enterprise_application_platform:7"
                    ]
                }

keycloak-core

https://access.redhat.com/jbossnetwork/restricted/listSoftware.html

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat JBoss Enterprise Application Platform 8",
                    "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
                    "packageName": "keycloak-core",
                    "defaultStatus": "unaffected",
                    "cpes": [
                        "cpe:/a:redhat:jboss_enterprise_application_platform:8"
                    ]
                }

keycloak-core

https://access.redhat.com/jbossnetwork/restricted/listSoftware.html

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
                    "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
                    "packageName": "keycloak-core",
                    "defaultStatus": "unaffected",
                    "cpes": [
                        "cpe:/a:redhat:jbosseapxp"
                    ]
                }

candlepin

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Satellite 6",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "candlepin",
                    "defaultStatus": "unaffected",
                    "cpes": [
                        "cpe:/a:redhat:satellite:6"
                    ]
                }

keycloak-core

https://access.redhat.com/downloads/content/package-browser/

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Red Hat",
                    "product": "Red Hat Single Sign-On 7",
                    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
                    "packageName": "keycloak-core",
                    "defaultStatus": "unaffected",
                    "cpes": [
                        "cpe:/a:redhat:red_hat_single_sign_on:7"
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON

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