Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-18206

A flaw was found in the keycloak-services component of Keycloak, which provides identity and access management services. The issue occurs when a realm administrator uses a wildcard domain (like *.example.com) to restrict which hosts can register or update clients. Due to improper validation, the system accepts any hostname that ends with the specified domain suffix, even if it is not a legitimate subdomain. An attacker who can control the reverse DNS of their connection can bypass these host-bas
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:bc14815a6f03536fc3f3dd80c9cd900669391e3a7deb693c1af23269c709f36d
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 6 assertions

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:26395130c924d474071dc87392b50096725e7ff2180e99aa8402b2ef05a175af · sha256:0637a2059844ca4f… · /containers/cna/affected/2

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:build_keycloak:"],"defaultStatus":"affected","packageName":"keycloak-services","product":"Red Hat Build of Keycloak","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:26395130c924d474071dc87392b50096725e7ff2180e99aa8402b2ef05a175af · sha256:0637a2059844ca4f… · /containers/cna/affected/0

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:26395130c924d474071dc87392b50096725e7ff2180e99aa8402b2ef05a175af · sha256:0637a2059844ca4f… · /containers/cna/affected/4

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:26395130c924d474071dc87392b50096725e7ff2180e99aa8402b2ef05a175af · sha256:0637a2059844ca4f… · /containers/cna/affected/5

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_data_grid:8"],"defaultStatus":"unaffected","packageName":"keycloak-services","product":"Red Hat Data Grid 8","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:26395130c924d474071dc87392b50096725e7ff2180e99aa8402b2ef05a175af · sha256:0637a2059844ca4f… · /containers/cna/affected/3

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

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:26395130c924d474071dc87392b50096725e7ff2180e99aa8402b2ef05a175af · sha256:0637a2059844ca4f… · /containers/cna/affected/1

Affected products and versions

6 source assertions
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:build_keycloak:"],"defaultStatus":"affected","packageName":"rhbk-openshift-rhel9/rhbk-openshift-rhel9","product":"Red Hat Build of Keycloak","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:26395130c924d474071dc87392b50096725e7ff2180e99aa8402b2ef05a175af · sha256:0637a2059844ca4f… · /containers/cna/affected/2
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:build_keycloak:"],"defaultStatus":"affected","packageName":"keycloak-services","product":"Red Hat Build of Keycloak","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:26395130c924d474071dc87392b50096725e7ff2180e99aa8402b2ef05a175af · sha256:0637a2059844ca4f… · /containers/cna/affected/0
{"collectionURL":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html","cpes":["cpe:/a:redhat:jbosseapxp"],"defaultStatus":"unaffected","packageName":"keycloak-services","product":"Red Hat JBoss Enterprise Application Platform Expansion Pack","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:26395130c924d474071dc87392b50096725e7ff2180e99aa8402b2ef05a175af · sha256:0637a2059844ca4f… · /containers/cna/affected/4
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:red_hat_single_sign_on:7"],"defaultStatus":"unaffected","packageName":"keycloak-services","product":"Red Hat Single Sign-On 7","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:26395130c924d474071dc87392b50096725e7ff2180e99aa8402b2ef05a175af · sha256:0637a2059844ca4f… · /containers/cna/affected/5
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:jboss_data_grid:8"],"defaultStatus":"unaffected","packageName":"keycloak-services","product":"Red Hat Data Grid 8","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:26395130c924d474071dc87392b50096725e7ff2180e99aa8402b2ef05a175af · sha256:0637a2059844ca4f… · /containers/cna/affected/3
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:build_keycloak:"],"defaultStatus":"affected","packageName":"rhbk-keycloak-rhel9/rhbk-keycloak-rhel9","product":"Red Hat Build of Keycloak","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:26395130c924d474071dc87392b50096725e7ff2180e99aa8402b2ef05a175af · sha256:0637a2059844ca4f… · /containers/cna/affected/1

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":3.7,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:26395130c924d474071dc87392b50096725e7ff2180e99aa8402b2ef05a175af · sha256:0637a2059844ca4f… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-20","description":"Improper Input Validation","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:26395130c924d474071dc87392b50096725e7ff2180e99aa8402b2ef05a175af · sha256:0637a2059844ca4f… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-18206"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:26395130c924d474071dc87392b50096725e7ff2180e99aa8402b2ef05a175af · sha256:0637a2059844ca4f… · /containers/cna/references/0
{"name":"RHBZ#2508292","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2508292"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:26395130c924d474071dc87392b50096725e7ff2180e99aa8402b2ef05a175af · sha256:0637a2059844ca4f… · /containers/cna/references/1

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

← Back to CVE Explorer