{"id":"CVE-2026-16089","title":"A flaw was found in the keycloak-services component of Red Hat Build of Keycloak","summary":"A flaw was found in the keycloak-services component of Red Hat Build of Keycloak. The issue occurs because OAuth 2.0 authorization codes are not properly bound to the client that originally requested them. An attacker who can intercept a…","severity":"medium","cvss":5.4,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:L/A:N","cwe":["CWE-472","CWE-384"],"vendor":"redhat","product":"build_of_keycloak","affected":["build_of_keycloak"],"patched":["build_of_keycloak 26.6.7"],"published":"2026-07-17","updated":"2026-09-16","sourceUpdated":"2026-09-16T19:17:07.217","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-16089","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:68277","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:68278","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-16089","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2501724","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-16089.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-16089"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-16089"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00179,"epssPercentile":0.07701,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-07-22T18:19:51.675300Z"},"ingestedAt":"2026-08-09T15:33:36.402Z","slug":"CVE-2026-16089","body":"## Overview\n\nA flaw was found in the keycloak-services component of Red Hat Build of Keycloak. The issue occurs because OAuth 2.0 authorization codes are not properly bound to the client that originally requested them. An attacker who can intercept an authorization code can modify it to be redeemed by their own client, potentially allowing them to obtain access tokens for a victim's identity.\n\n## Affected\n\n- `build_of_keycloak`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:68278** · Red Hat · fixed in: Red Hat build of Keycloak 26.6.7 · released 2026-09-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:68278)\n- **RHSA-2026:68277** · Red Hat · fixed in: Red Hat build of Keycloak 26.6 · released 2026-09-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:68277)","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":29.7,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}