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CVE-2026-18208

A flaw was found in the OIDC token introspection endpoint of the keycloak-services component. Keycloak is an open-source identity and access management solution used to secure modern applications and services. The issue occurs when a confidential client, configured to receive signed JWT introspection responses, attempts to introspect a token issued for a different audience. Although the endpoint correctly identifies the token as inactive for that client, it still returns the full set of token cl
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:88fde057e21493a68ce15c2d68ff1f9427577300fe0299f29f24ed67cbd78c49
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":"keycloak-services","product":"Red Hat Build of Keycloak","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6a0570bdc94751772077f4cc407cc8a5c428a17ea0e1f0af37e687d5e41a0902 · sha256:5f0e19d77525898f… · /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:v2:6a0570bdc94751772077f4cc407cc8a5c428a17ea0e1f0af37e687d5e41a0902 · sha256:5f0e19d77525898f… · /containers/cna/affected/4

{"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:v2:6a0570bdc94751772077f4cc407cc8a5c428a17ea0e1f0af37e687d5e41a0902 · sha256:5f0e19d77525898f… · /containers/cna/affected/2

{"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:v2:6a0570bdc94751772077f4cc407cc8a5c428a17ea0e1f0af37e687d5e41a0902 · sha256:5f0e19d77525898f… · /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:v2:6a0570bdc94751772077f4cc407cc8a5c428a17ea0e1f0af37e687d5e41a0902 · sha256:5f0e19d77525898f… · /containers/cna/affected/1

{"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:v2:6a0570bdc94751772077f4cc407cc8a5c428a17ea0e1f0af37e687d5e41a0902 · sha256:5f0e19d77525898f… · /containers/cna/affected/5

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":"keycloak-services","product":"Red Hat Build of Keycloak","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:6a0570bdc94751772077f4cc407cc8a5c428a17ea0e1f0af37e687d5e41a0902 · sha256:5f0e19d77525898f… · /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:v2:6a0570bdc94751772077f4cc407cc8a5c428a17ea0e1f0af37e687d5e41a0902 · sha256:5f0e19d77525898f… · /containers/cna/affected/4
{"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:v2:6a0570bdc94751772077f4cc407cc8a5c428a17ea0e1f0af37e687d5e41a0902 · sha256:5f0e19d77525898f… · /containers/cna/affected/2
{"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:v2:6a0570bdc94751772077f4cc407cc8a5c428a17ea0e1f0af37e687d5e41a0902 · sha256:5f0e19d77525898f… · /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:v2:6a0570bdc94751772077f4cc407cc8a5c428a17ea0e1f0af37e687d5e41a0902 · sha256:5f0e19d77525898f… · /containers/cna/affected/1
{"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:v2:6a0570bdc94751772077f4cc407cc8a5c428a17ea0e1f0af37e687d5e41a0902 · sha256:5f0e19d77525898f… · /containers/cna/affected/5

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:6a0570bdc94751772077f4cc407cc8a5c428a17ea0e1f0af37e687d5e41a0902 · sha256:5f0e19d77525898f… · /containers/cna/metrics/1/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-862","description":"Missing Authorization","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:6a0570bdc94751772077f4cc407cc8a5c428a17ea0e1f0af37e687d5e41a0902 · sha256:5f0e19d77525898f… · /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-2026-18208"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6a0570bdc94751772077f4cc407cc8a5c428a17ea0e1f0af37e687d5e41a0902 · sha256:5f0e19d77525898f… · /containers/cna/references/0
{"name":"RHBZ#2508304","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2508304"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:6a0570bdc94751772077f4cc407cc8a5c428a17ea0e1f0af37e687d5e41a0902 · sha256:5f0e19d77525898f… · /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.

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