{"affected":[{"defaultStatus":"unaffected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"keycloak-services","product":"Red Hat build of Keycloak 26.6.8","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"unaffected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"rhbk/keycloak-rhel9","product":"Red Hat build of Keycloak 26.6.8","source":"CNA: redhat","vendor":"Red Hat","versions":[]},{"defaultStatus":"unaffected","ecosystem":"https://access.redhat.com/downloads/content/package-browser/","packageName":"keycloak-services","product":"Red Hat Single Sign-On 7","source":"CNA: redhat","vendor":"Red Hat","versions":[]}],"cveId":"CVE-2026-101333","cwes":["CWE-770"],"description":"A flaw was found in the Micrometer user-event metrics listener of Keycloak, a solution for integrated identity and access management. The issue occurs when the listener is configured to include the idp tag. An unauthenticated attacker can send requests to the identity broker login endpoint using arbitrary provider aliases, causing the system to create an unlimited number of metric time series. This can lead to excessive memory consumption and degrade the performance of both the server and its monitoring tools.","epss":{"date":"2026-11-05","percentile":0.13982,"score":0.0023},"exploits":[],"kev":null,"metrics":[{"score":3.7,"severity":"low","source":"CNA: redhat","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},{"score":3.7,"severity":"low","source":"NVD: secalert@redhat.com","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"}],"modifiedAt":1793963822400,"publishedAt":1790606295037,"references":[{"source":"CNA: redhat","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2026:95761"},{"source":"CNA: redhat","tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-101333"},{"source":"CNA: redhat","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2542498"},{"source":"secalert@redhat.com","tags":[],"url":"https://access.redhat.com/errata/RHSA-2026:95761"},{"source":"secalert@redhat.com","tags":[],"url":"https://access.redhat.com/security/cve/CVE-2026-101333"},{"source":"secalert@redhat.com","tags":[],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2542498"}],"remediation":[{"kind":"workaround","source":"CNA: redhat","text":"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."}],"revision":"3c710e266e54f5650f5efab20eaef8636b5ad19b66fb52fc6a504306b1bacf08","sources":[{"modifiedAt":1793960880791,"name":"CNA: redhat","retrievedAt":1793963300925,"url":"https://www.cve.org/CVERecord?id=CVE-2026-101333"},{"modifiedAt":1793963822400,"name":"NVD","retrievedAt":1793967467097,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-101333"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793963333140,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-101333"}],"ssvc":{"assessedAt":1790608691650,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"partial"},"status":"published","title":"Keycloak-services: keycloak-services: unbounded metric series creation via idp tag on broker login endpoint","updatedAt":1793967467097}