CVE-2026-4282 (GCVE-0-2026-4282)
Vulnerability from cvelistv5 – Published: 2026-04-02 12:44 – Updated: 2026-07-15 00:56- CWE-653 - Improper Isolation or Compartmentalization
| URL | Tags |
|---|---|
| https://access.redhat.com/errata/RHSA-2026:6475 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:6476 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:6477 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:6478 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/security/cve/CVE-2026-4282 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2448061 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Red Hat | Red Hat build of Keycloak 26.2 |
Unaffected:
26.2.15-1 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.2::el9 |
||
| Red Hat | Red Hat build of Keycloak 26.2 |
Unaffected:
26.2-18 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.2::el9 |
||
| Red Hat | Red Hat build of Keycloak 26.2.15 |
cpe:/a:redhat:build_keycloak:26.2::el9
|
||
| Red Hat | Red Hat build of Keycloak 26.4 |
Unaffected:
26.4.11-1 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.4::el9 |
||
| Red Hat | Red Hat build of Keycloak 26.4 |
Unaffected:
26.4-14 , < *
(rpm)
cpe:/a:redhat:build_keycloak:26.4::el9 |
||
| Red Hat | Red Hat build of Keycloak 26.4.11 |
cpe:/a:redhat:build_keycloak:26.4::el9
|
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-4282",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-02T14:23:22.750489Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-04-02T14:24:41.770Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"affected": [
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-operator-bundle",
"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.2.15-1",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.2-18",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9-operator",
"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.2-18",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "unaffected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.2.15",
"vendor": "Red Hat"
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-operator-bundle",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.4.11-1",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.4-14",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9-operator",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.4-14",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "unaffected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.4.11",
"vendor": "Red Hat"
}
],
"datePublic": "2026-04-02T12:30:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens, resulting in privilege escalation."
}
],
"metrics": [
{
"other": {
"content": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"value": "Important"
},
"type": "Red Hat severity rating"
}
},
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-653",
"description": "Improper Isolation or Compartmentalization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-15T00:56:46.658Z",
"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"shortName": "redhat-SADP"
},
"references": [
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-4282"
},
{
"name": "RHBZ#2448061",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448061"
},
{
"tags": [
"x_sadp-csaf-vex"
],
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4282.json"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6476"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6478"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6475"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6477"
}
],
"solutions": [
{
"lang": "en",
"value": "RHSA-2026:6476: Red Hat build of Keycloak 26.2"
},
{
"lang": "en",
"value": "RHSA-2026:6478: Red Hat build of Keycloak 26.4"
},
{
"lang": "en",
"value": "RHSA-2026:6475: Red Hat build of Keycloak 26.2.15"
},
{
"lang": "en",
"value": "RHSA-2026:6477: Red Hat build of Keycloak 26.4.11"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-03-16T15:53:57.767Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-04-02T12:30:00.000Z",
"value": "Made public."
}
],
"title": "keycloak: Keycloak: Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw",
"workarounds": [
{
"lang": "en",
"value": "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."
}
],
"x_adpType": "supplier",
"x_generator": {
"engine": "sadp-cli 1.0.0"
}
}
],
"cna": {
"affected": [
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-operator-bundle",
"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.2.15-1",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.2-18",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9-operator",
"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.2-18",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "unaffected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.2.15",
"vendor": "Red Hat"
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-operator-bundle",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.4.11-1",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.4-14",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9-operator",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.4-14",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "unaffected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.4.11",
"vendor": "Red Hat"
}
],
"credits": [
{
"lang": "en",
"value": "Red Hat would like to thank chungkn (OneMount Group) for reporting this issue."
}
],
"datePublic": "2026-04-02T12:30:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens, resulting in privilege escalation."
}
],
"metrics": [
{
"other": {
"content": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"value": "Important"
},
"type": "Red Hat severity rating"
}
},
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-653",
"description": "Improper Isolation or Compartmentalization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-07T11:27:33.522Z",
"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"shortName": "redhat"
},
"references": [
{
"name": "RHSA-2026:6475",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6475"
},
{
"name": "RHSA-2026:6476",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6476"
},
{
"name": "RHSA-2026:6477",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6477"
},
{
"name": "RHSA-2026:6478",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6478"
},
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-4282"
},
{
"name": "RHBZ#2448061",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448061"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-03-16T15:53:57.767Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-04-02T12:30:00.000Z",
"value": "Made public."
}
],
"title": "Keycloak: keycloak: privilege escalation via forged authorization codes due to singleuseobjectprovider isolation flaw",
"workarounds": [
{
"lang": "en",
"value": "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."
}
],
"x_generator": {
"engine": "cvelib 1.8.0"
},
"x_redhatCweChain": "CWE-653: Improper Isolation or Compartmentalization"
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2026-4282",
"datePublished": "2026-04-02T12:44:52.941Z",
"dateReserved": "2026-03-16T15:53:24.993Z",
"dateUpdated": "2026-07-15T00:56:46.658Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-4282",
"date": "2026-10-31",
"epss": "0.00432",
"percentile": "0.37569"
},
"nvd": {
"cve": {
"affected": [
{
"affectedData": [
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-operator-bundle",
"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.2.15-1",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.2-18",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9-operator",
"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.2-18",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "unaffected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.2.15",
"vendor": "Red Hat"
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-operator-bundle",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.4.11-1",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.4-14",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9-operator",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.4-14",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "unaffected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.4.11",
"vendor": "Red Hat"
}
],
"source": "secalert@redhat.com"
},
{
"affectedData": [
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-operator-bundle",
"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.2.15-1",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.2-18",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9-operator",
"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.2-18",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "unaffected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.2.15",
"vendor": "Red Hat"
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-operator-bundle",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.4.11-1",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.4-14",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9-operator",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.4-14",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "unaffected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.4.11",
"vendor": "Red Hat"
}
],
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:redhat:build_of_keycloak:-:*:*:*:text-only:*:*:*",
"matchCriteriaId": "1830E455-7E11-4264-862D-05971A42D4A6",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:redhat:build_of_keycloak:26.2:*:*:*:text-only:*:*:*",
"matchCriteriaId": "C339EBE3-6BFD-4082-B904-4E8DB87AAE68",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:redhat:build_of_keycloak:26.2.15:*:*:*:text-only:*:*:*",
"matchCriteriaId": "3BDF8A92-727E-401B-80BB-A141DCB39750",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:redhat:build_of_keycloak:26.4:*:*:*:text-only:*:*:*",
"matchCriteriaId": "100AA077-7467-4F62-A8FD-88BC336972DF",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:redhat:build_of_keycloak:26.4.11:*:*:*:text-only:*:*:*",
"matchCriteriaId": "17E79930-BE1C-4901-AF63-36B3EB149AFC",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens, resulting in privilege escalation."
},
{
"lang": "es",
"value": "Se encontr\u00f3 un fallo en Keycloak. El SingleUseObjectProvider, un almac\u00e9n global de clave-valor, carece de aislamiento adecuado de tipo y espacio de nombres. Esta vulnerabilidad permite a un atacante no autenticado falsificar c\u00f3digos de autorizaci\u00f3n. La explotaci\u00f3n exitosa puede llevar a la creaci\u00f3n de tokens de acceso con capacidad de administrador, resultando en escalada de privilegios."
}
],
"id": "CVE-2026-4282",
"lastModified": "2026-10-26T21:10:00.170",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 5.2,
"source": "secalert@redhat.com",
"type": "Secondary"
},
{
"cvssData": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 2.2,
"impactScore": 5.2,
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-4282",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-02T14:23:22.750489Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-04-02T13:16:26.680",
"references": [
{
"source": "secalert@redhat.com",
"tags": [
"Vendor Advisory"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6475"
},
{
"source": "secalert@redhat.com",
"tags": [
"Vendor Advisory"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6476"
},
{
"source": "secalert@redhat.com",
"tags": [
"Vendor Advisory"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6477"
},
{
"source": "secalert@redhat.com",
"tags": [
"Vendor Advisory"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6478"
},
{
"source": "secalert@redhat.com",
"tags": [
"Vendor Advisory"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-4282"
},
{
"source": "secalert@redhat.com",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448061"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"tags": [
"Vendor Advisory"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6475"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"tags": [
"Vendor Advisory"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6476"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"tags": [
"Vendor Advisory"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6477"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"tags": [
"Vendor Advisory"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6478"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"tags": [
"Vendor Advisory"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-4282"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"tags": [
"Issue Tracking",
"Vendor Advisory"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448061"
},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4282.json"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-653"
}
],
"source": "secalert@redhat.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-653"
}
],
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"type": "Secondary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2026-06-30T03:51:48+00:00",
"cve": "CVE-2026-4282",
"id": "CVE-2026-4282",
"initial_release_date": "2026-04-02T12:30:00+00:00",
"product_status:fixed": "20",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "keycloak: Keycloak: Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4282.json",
"version": "3"
},
"vulnrichment": {
"containers": {
"adp": [
{
"affected": [
{
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "affected",
"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "affected",
"product": "Red Hat build of Keycloak 26.2.15",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"product": "Red Hat build of Keycloak 26.4.11",
"vendor": "Red Hat"
}
],
"datePublic": "2026-04-02T12:30:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens, resulting in privilege escalation."
}
],
"metrics": [
{
"other": {
"content": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"value": "Important"
},
"type": "Red Hat severity rating"
}
},
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-653",
"description": "Improper Isolation or Compartmentalization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-30T03:19:07.728Z",
"orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"shortName": "redhat-SADP"
},
"references": [
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-4282"
},
{
"name": "RHBZ#2448061",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448061"
},
{
"tags": [
"x_sadp-csaf-vex"
],
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4282.json"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6476"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6478"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6475"
},
{
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6477"
}
],
"solutions": [
{
"lang": "en",
"value": "RHSA-2026:6476: Red Hat build of Keycloak 26.2"
},
{
"lang": "en",
"value": "RHSA-2026:6478: Red Hat build of Keycloak 26.4"
},
{
"lang": "en",
"value": "RHSA-2026:6475: Red Hat build of Keycloak 26.2.15"
},
{
"lang": "en",
"value": "RHSA-2026:6477: Red Hat build of Keycloak 26.4.11"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-03-16T15:53:57.767Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-04-02T12:30:00.000Z",
"value": "Made public."
}
],
"title": "keycloak: Keycloak: Privilege escalation via forged authorization codes due to SingleUseObjectProvider isolation flaw",
"workarounds": [
{
"lang": "en",
"value": "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."
}
],
"x_adpType": "supplier",
"x_generator": {
"engine": "sadp-cli 1.0.0"
}
},
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-4282",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-02T14:23:22.750489Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-04-02T14:23:43.727Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-operator-bundle",
"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.2.15-1",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.2-18",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9-operator",
"product": "Red Hat build of Keycloak 26.2",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.2-18",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.2::el9"
],
"defaultStatus": "unaffected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.2.15",
"vendor": "Red Hat"
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-operator-bundle",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.4.11-1",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.4-14",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "affected",
"packageName": "rhbk/keycloak-rhel9-operator",
"product": "Red Hat build of Keycloak 26.4",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "26.4-14",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:build_keycloak:26.4::el9"
],
"defaultStatus": "unaffected",
"packageName": "rhbk/keycloak-rhel9",
"product": "Red Hat build of Keycloak 26.4.11",
"vendor": "Red Hat"
}
],
"credits": [
{
"lang": "en",
"value": "Red Hat would like to thank chungkn (OneMount Group) for reporting this issue."
}
],
"datePublic": "2026-04-02T12:30:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in Keycloak. The SingleUseObjectProvider, a global key-value store, lacks proper type and namespace isolation. This vulnerability allows an unauthenticated attacker to forge authorization codes. Successful exploitation can lead to the creation of admin-capable access tokens, resulting in privilege escalation."
}
],
"metrics": [
{
"other": {
"content": {
"namespace": "https://access.redhat.com/security/updates/classification/",
"value": "Important"
},
"type": "Red Hat severity rating"
}
},
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-653",
"description": "Improper Isolation or Compartmentalization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-07T11:27:33.522Z",
"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"shortName": "redhat"
},
"references": [
{
"name": "RHSA-2026:6475",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6475"
},
{
"name": "RHSA-2026:6476",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6476"
},
{
"name": "RHSA-2026:6477",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6477"
},
{
"name": "RHSA-2026:6478",
"tags": [
"vendor-advisory",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/errata/RHSA-2026:6478"
},
{
"tags": [
"vdb-entry",
"x_refsource_REDHAT"
],
"url": "https://access.redhat.com/security/cve/CVE-2026-4282"
},
{
"name": "RHBZ#2448061",
"tags": [
"issue-tracking",
"x_refsource_REDHAT"
],
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448061"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-03-16T15:53:57.767Z",
"value": "Reported to Red Hat."
},
{
"lang": "en",
"time": "2026-04-02T12:30:00.000Z",
"value": "Made public."
}
],
"title": "Keycloak: keycloak: privilege escalation via forged authorization codes due to singleuseobjectprovider isolation flaw",
"workarounds": [
{
"lang": "en",
"value": "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."
}
],
"x_generator": {
"engine": "cvelib 1.8.0"
},
"x_redhatCweChain": "CWE-653: Improper Isolation or Compartmentalization"
}
},
"cveMetadata": {
"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
"assignerShortName": "redhat",
"cveId": "CVE-2026-4282",
"datePublished": "2026-04-02T12:44:52.941Z",
"dateReserved": "2026-03-16T15:53:24.993Z",
"dateUpdated": "2026-06-30T03:19:07.728Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
How durations are calculated
Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.
Loading timeline…
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.