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CVE-2026-15571 Keycloak-services: keycloak-services: predictable account-linking hash enables account takeover via malicious oidc client

🗓️ 18 Aug 2026 20:40:17Reported by redhatType 
cvelist
 cvelist
🔗 www.cve.org👁 26 Views

Predictable hash in Keycloak account-linking endpoint enables account takeover via malicious OIDC client.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
circl
Circl
CVE-2026-15571
25 Aug 202612:45
circl
cve
CVE
CVE-2026-15571
18 Aug 202620:40
cve
euvd
EUVD
EUVD-2026-61238
18 Aug 202620:40
euvd
nessus
Tenable Nessus
Keycloak 26.6.x < 26.6.6 Multiple Vulnerabilities
20 Aug 202600:00
nessus
ncsc
NCSC
Vulnerabilities hidden within Keycloak
25 Aug 202613:39
ncsc
nvd
NVD
CVE-2026-15571
18 Aug 202621:16
nvd
osv
OSV
BIT-KEYCLOAK-2026-15571 Flaw in the legacy client-initiated account-linking endpoint of Keycloak
25 Aug 202610:46
osv
ptsecurity
Positive Technologies
PT-2026-77310
18 Aug 202600:00
ptsecurity
redhatcve
RedhatCVE
CVE-2026-15571
18 Aug 202620:40
redhatcve
redhat
RedHat Linux
Critical: Red Hat Security Advisory: Red Hat build of Keycloak 26.6.6 Security Update
18 Aug 202620:37
redhat
Rows per page
[
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    "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": "26.6.6-1",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:build_keycloak:26.6::el9"
    ]
  },
  {
    "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": [
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    ],
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    "cpes": [
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  {
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  {
    "vendor": "Red Hat",
    "product": "Red Hat Data Grid 8",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "keycloak-services",
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jboss_data_grid:8"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
    "collectionURL": "https://access.redhat.com/jbossnetwork/restricted/listSoftware.html",
    "packageName": "keycloak-services",
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:jbosseapxp"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Single Sign-On 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "keycloak-services",
    "defaultStatus": "unaffected",
    "cpes": [
      "cpe:/a:redhat:red_hat_single_sign_on:7"
    ]
  }
]

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19 Aug 2026 01:55Current
CVSS 3.17.3
EPSS0.00329
26