HighFix available
Security fix for CVE-2026-39852 applied in: keycloak 26.3.5-r3, keycloak 26.4.10-r0, keycloak 26.4.11-r2, keycloak 26.5.6-r5, keycloak 26.6.1-r1
Type: advisorySources: OSV
CVE-2026-39852 affects multiple packages. This issue is resolved in later releases. See references for individual vulnerability details.
- Products
- keycloak
- Affected versions
- Not specified
- Fixed versions
- 26.3.5-r3, 26.4.10-r0, 26.4.11-r2, 26.5.6-r5, 26.6.1-r1
- CVEs
- CVE-2026-39852
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 28 Oct 2026, 10:48 UTC · Revision 1
Source evidence
Security fix for CVE-2026-39852 applied in: keycloak 26.3.5-r3, keycloak 26.4.10-r0, keycloak 26.4.11-r2, keycloak 26.5.6-r5, keycloak 26.6.1-r1
core-osv · Original sourcePublished 18 Sept 2026, 10:16 UTC
CVE-2026-39852 affects multiple packages. This issue is resolved in later releases. See references for individual vulnerability details.
osv:CLEANSTART-2026-CY16294
keycloak
Fixed versions: 26.3.5-r3
keycloak
Fixed versions: 26.4.10-r0
keycloak
Fixed versions: 26.4.11-r2
keycloak
Fixed versions: 26.5.6-r5
keycloak
Fixed versions: 26.6.1-r1
Complete source record
{
"id": "473443faf4f81c701a0768d3c7a8e0dac523cefc078100d2a2c4eccfde134d98",
"url": "https://osv.dev/vulnerability/CLEANSTART-2026-CY16294",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Security fix for CVE-2026-39852 applied in: keycloak 26.3.5-r3, keycloak 26.4.10-r0, keycloak 26.4.11-r2, keycloak 26.5.6-r5, keycloak 26.6.1-r1",
"summary": "CVE-2026-39852 affects multiple packages. This issue is resolved in later releases. See references for individual vulnerability details.",
"evidence": "osv:CLEANSTART-2026-CY16294",
"products": [
{
"name": {
"value": "keycloak",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "26.3.5-r3",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "keycloak",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "26.4.10-r0",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "keycloak",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "26.4.11-r2",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "keycloak",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "26.5.6-r5",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": []
},
{
"name": {
"value": "keycloak",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "26.6.1-r1",
"evidence": "/affected/4/ranges"
}
],
"affected_versions": []
}
],
"severity": "high",
"structured": {
"id": "CLEANSTART-2026-CY16294",
"aliases": [
"CLEANSTART-2026-CY16294"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "26.3.5-r3"
}
]
}
],
"package": {
"name": "keycloak",
"purl": "pkg:apk/cleanstart/keycloak?arch=noarch",
"ecosystem": "CleanStart"
},
"database_specific": {
"source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-CY16294.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "26.4.10-r0"
}
]
}
],
"package": {
"name": "keycloak",
"purl": "pkg:apk/cleanstart/keycloak?arch=noarch",
"ecosystem": "CleanStart"
},
"database_specific": {
"source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-CY16294.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "26.4.11-r2"
}
]
}
],
"package": {
"name": "keycloak",
"purl": "pkg:apk/cleanstart/keycloak?arch=noarch",
"ecosystem": "CleanStart"
},
"database_specific": {
"source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-CY16294.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "26.5.6-r5"
}
]
}
],
"package": {
"name": "keycloak",
"purl": "pkg:apk/cleanstart/keycloak?arch=noarch",
"ecosystem": "CleanStart"
},
"database_specific": {
"source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-CY16294.json"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "26.6.1-r1"
}
]
}
],
"package": {
"name": "keycloak",
"purl": "pkg:apk/cleanstart/keycloak?arch=noarch",
"ecosystem": "CleanStart"
},
"database_specific": {
"source": "https://github.com/cleanstart-dev/cleanstart-security-advisories/blob/main/advisories/2026/CLEANSTART-2026-CY16294.json"
}
}
],
"modified": "2026-10-09T07:46:02.529786844Z",
"provider": "osv",
"upstream": [
"CVE-2026-39852"
],
"references": [
"https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-CY16294.json",
"https://osv.dev/vulnerability/CVE-2026-39852",
"https://nvd.nist.gov/vuln/detail/CVE-2026-39852"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2026-39852",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 109388,
"published_at": "2026-09-18T10:16:47.404+00:00"
}