{"id":"CVE-2026-82968","title":"Keycloak-services: keycloak-services: cross-session email verification proof not bound to upstream identity for social providers","summary":"A flaw was found in the first-broker-login flow of the Keycloak identity management service. When a user links a social identity provider account to their local account, the verification proof generated is not strictly bound to the speci…","severity":"medium","cvss":6.4,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N","cvssSource":"cna","cwe":["CWE-639"],"vendor":"Red Hat","product":"keycloak/rhbk-openshift-rhel9","affected":["keycloak/rhbk-openshift-rhel9","keycloak-services","rhbk/keycloak-rhel9","keycloak-services (all versions)"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-02T13:00:34.094384Z"},"published":"2026-09-02","updated":"2026-11-06","sourceUpdated":"2026-11-06T10:25:35.093Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-82968","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:95761","label":"RHSA-2026:95761"},{"url":"https://access.redhat.com/security/cve/CVE-2026-82968"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2526318","label":"RHBZ#2526318"}],"tags":["cve.org"],"epss":0.00325,"epssPercentile":0.25686,"ingestedAt":"2026-11-06T10:49:35.383Z","slug":"CVE-2026-82968","body":"## Overview\n\nA flaw was found in the first-broker-login flow of the Keycloak identity management service. When a user links a social identity provider account to their local account, the verification proof generated is not strictly bound to the specific upstream identity being verified. This allows an attacker with a different account on the same social provider to intercept the process and link their own account to the victim's local profile, gaining unauthorized access.\n\n## Affected\n\n- `keycloak/rhbk-openshift-rhel9`\n- `keycloak-services`\n- `rhbk/keycloak-rhel9`\n- `keycloak-services (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n### Workarounds\n\nMitigation 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.","depth":"sunlit","depthScore":35,"depthScoreParts":{"impact":35.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}