{"id":"CVE-2026-16089","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-16089","generatedAt":"2026-10-28T03:59:24.681Z","title":"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.","description":"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 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.","published":"2026-07-17T15:16:46.000Z","lastModified":"2026-09-16T19:17:07.000Z","status":"Modified","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"3.1","score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:L/A:N"},"cwe":["CWE-472","CWE-384"],"affected":["redhat/build of keycloak"],"epss":{"score":0.00295,"percentile":0.21956,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.29%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:68277","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:68278","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-16089","tags":["Vendor Advisory"],"source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2501724","tags":["Issue Tracking","Vendor Advisory"],"source":"secalert@redhat.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-16089","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}