310 lines
13 KiB
JSON
310 lines
13 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2026-9798",
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"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
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"state": "PUBLISHED",
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"assignerShortName": "redhat",
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"dateReserved": "2026-05-28T03:51:03.615Z",
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"datePublished": "2026-05-28T04:37:09.472Z",
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"dateUpdated": "2026-08-20T00:54:21.784Z"
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},
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"containers": {
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"cna": {
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"title": "Keycloak: keycloak: brute-force protection bypass in ciba flow",
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"metrics": [
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{
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"other": {
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"content": {
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"value": "Moderate",
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"namespace": "https://access.redhat.com/security/updates/classification/"
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},
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"type": "Red Hat severity rating"
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}
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},
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 4.3,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "LOW",
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"integrityImpact": "NONE",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "REQUIRED",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N",
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"version": "3.1"
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},
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"format": "CVSS"
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "A flaw was found in Keycloak, an open-source identity and access management solution. When a user account is temporarily locked due to repeated failed login attempts, an attacker with valid client credentials can exploit the Client-Initiated Backchannel Authentication (CIBA) flow to bypass this brute-force protection. This allows continued authentication attempts and token issuance even when the account should be locked, potentially enabling further unauthorized access attempts."
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}
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],
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"affected": [
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{
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"vendor": "Red Hat",
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"product": "Red Hat build of Keycloak 26.4",
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"packageName": "rhbk/keycloak-operator-bundle",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "26.4.14-1",
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"lessThan": "*",
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"versionType": "rpm",
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"status": "unaffected"
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}
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],
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"cpes": [
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"cpe:/a:redhat:build_keycloak:26.4::el9"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat build of Keycloak 26.4",
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"packageName": "rhbk/keycloak-rhel9",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "26.4-22",
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"lessThan": "*",
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"versionType": "rpm",
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"status": "unaffected"
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}
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],
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"cpes": [
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"cpe:/a:redhat:build_keycloak:26.4::el9"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat build of Keycloak 26.4",
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"packageName": "rhbk/keycloak-rhel9-operator",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "26.4-22",
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"lessThan": "*",
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"versionType": "rpm",
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"status": "unaffected"
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}
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],
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"cpes": [
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"cpe:/a:redhat:build_keycloak:26.4::el9"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat build of Keycloak 26.4.14",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"defaultStatus": "unaffected",
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"packageName": "rhbk/keycloak-rhel9",
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"cpes": [
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"cpe:/a:redhat:build_keycloak:26.4::el9"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat build of Keycloak 26.6",
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"packageName": "rhbk/keycloak-operator-bundle",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "26.6.5-1",
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"lessThan": "*",
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"versionType": "rpm",
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"status": "unaffected"
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}
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],
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"cpes": [
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"cpe:/a:redhat:build_keycloak:26.6::el9"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat build of Keycloak 26.6",
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"packageName": "rhbk/keycloak-rhel9",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "26.6-11",
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"lessThan": "*",
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"versionType": "rpm",
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"status": "unaffected"
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}
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],
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"cpes": [
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"cpe:/a:redhat:build_keycloak:26.6::el9"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat build of Keycloak 26.6",
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"collectionURL": "https://catalog.redhat.com/software/containers/",
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"packageName": "rhbk/keycloak-rhel9-operator",
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"defaultStatus": "affected",
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"versions": [
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{
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"version": "26.6-11",
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"lessThan": "*",
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"versionType": "rpm",
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"status": "unaffected"
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}
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],
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"cpes": [
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"cpe:/a:redhat:build_keycloak:26.6::el9"
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]
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},
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{
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"vendor": "Red Hat",
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"product": "Red Hat build of Keycloak 26.6.5",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"defaultStatus": "unaffected",
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"cpes": [
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"cpe:/a:redhat:build_keycloak:26.6::el9"
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]
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}
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],
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"references": [
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:50846",
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"name": "RHSA-2026:50846",
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"tags": [
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"vendor-advisory",
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"x_refsource_REDHAT"
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]
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},
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:50847",
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"name": "RHSA-2026:50847",
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"tags": [
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"vendor-advisory",
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"x_refsource_REDHAT"
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]
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},
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:50848",
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"name": "RHSA-2026:50848",
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"tags": [
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"vendor-advisory",
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"x_refsource_REDHAT"
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]
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},
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{
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"url": "https://access.redhat.com/errata/RHSA-2026:50849",
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"name": "RHSA-2026:50849",
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"tags": [
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"vendor-advisory",
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"x_refsource_REDHAT"
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]
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},
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{
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"url": "https://access.redhat.com/security/cve/CVE-2026-9798",
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"tags": [
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"vdb-entry",
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"x_refsource_REDHAT"
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]
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},
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{
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482470",
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"name": "RHBZ#2482470",
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"tags": [
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"issue-tracking",
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"x_refsource_REDHAT"
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]
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}
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],
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"datePublic": "2026-05-28T03:53:01.734Z",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-305",
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"description": "Authentication Bypass by Primary Weakness",
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"lang": "en",
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"type": "CWE"
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}
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]
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}
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],
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"x_redhatCweChain": "CWE-305: Authentication Bypass by Primary Weakness",
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"workarounds": [
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{
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"lang": "en",
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"value": "To mitigate this issue, ensure that Client-Initiated Backchannel Authentication (CIBA) is not enabled in Keycloak realms unless explicitly required. If CIBA is enabled, consider disabling it to prevent the bypass of brute-force protection mechanisms. Consult Keycloak documentation for instructions on managing CIBA configuration."
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}
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],
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"timeline": [
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{
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"lang": "en",
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"time": "2026-05-28T03:49:51.972Z",
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"value": "Reported to Red Hat."
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},
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{
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"lang": "en",
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"time": "2026-05-28T03:53:01.734Z",
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"value": "Made public."
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "Red Hat would like to thank Evan Hendra (Independent Security Researcher) for reporting this issue."
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}
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],
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"providerMetadata": {
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"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
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"shortName": "redhat",
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"dateUpdated": "2026-08-20T00:54:21.784Z"
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},
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"x_generator": {
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"engine": "cvelib 1.8.0"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"type": "ssvc",
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"content": {
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"timestamp": "2026-05-29T18:29:49.249825Z",
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"id": "CVE-2026-9798",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "no"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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}
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}
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]
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}
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} |