{"id":"CVE-2026-89298","description":"A flaw was found in the Dynamic Client Registration service of Keycloak, an open-source identity and access management solution. The issue occurs when a user with the view-clients role accesses the client registration endpoint to retrieve client details. Due to a failure to mask sensitive information, the service returns the client's confidential secret in cleartext. This could allow a read-only administrator to obtain full access to the affected client's account and potentially escalate their privileges within the realm.","cvssScore":4.9,"cvssVersion":"3.1","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","cvssMetrics":[{"version":"3.1","score":4.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","source":"secalert@redhat.com","type":"Secondary"}],"cwes":["CWE-200"],"resolved":"NO-EXPLOIT-PUBLISHED","published":"2026-09-11","lastModified":"2026-09-11","references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2531871","source":"patch-hint","tags":["bugzilla"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-89298","source":"secalert@redhat.com"}],"reasoning":{"decidingSource":"below-action-threshold","decidingReason":"This CVE is MEDIUM severity, is not listed in CISA KEV, has no public exploit or PoC in any indexed source, carries no CISA Vulnrichment finding of a demonstrated exploit, and is not part of an Oracle Critical Patch Update. None of the signals that would put it in front of an engineer is present, and the volume of CVEs below that bar is too great to take one at a time, so no rule is written for it. This is a decision about what we act on, not a finding that the CVE is harmless — a patch may well be derivable, and a low-severity defect can still be one link in a longer chain.","verdicts":[{"rule":"rejected","stage":"identity","outcome":"no-match"},{"rule":"armr-patch-file","stage":"scope","outcome":"no-match"},{"rule":"armr-secure-rule-file","stage":"scope","outcome":"no-match"},{"rule":"manual-classification","stage":"scope","outcome":"no-match"},{"rule":"h2-history","stage":"scope","outcome":"no-match"},{"rule":"non-java-upstream","stage":"scope","outcome":"no-match"},{"rule":"oracle-component","stage":"scope","outcome":"no-match"},{"rule":"osv-maven","stage":"scope","outcome":"no-match"},{"rule":"cna-maven-package","stage":"scope","outcome":"no-match"},{"rule":"known-cpe-product","stage":"scope","outcome":"no-match"},{"rule":"cna-cpe-product","stage":"scope","outcome":"matched","status":"QUEUED-FOR-REVIEW","detail":"cvelistV5 CPEs match known products: redhat/build_keycloak, redhat/red_hat_single_sign_on"},{"rule":"patch-hint","stage":"disposition","outcome":"matched","status":"MITIGATION-CANDIDATE","detail":"References include candidate fix URL (bugzilla tier): https://bugzilla.redhat.com/show_bug.cgi?id=2531871"},{"rule":"open-source-maven","stage":"disposition","outcome":"skipped"},{"rule":"poc-derivable","stage":"disposition","outcome":"skipped"},{"rule":"no-exploit","stage":"disposition","outcome":"skipped"},{"rule":"secure-rule-match","stage":"disposition","outcome":"no-match"},{"rule":"below-action-threshold","stage":"disposition","outcome":"matched","status":"NO-EXPLOIT-PUBLISHED","detail":"MEDIUM severity, no KEV listing, no public PoC clearing the evidence bar, no CISA exploitation finding, and not in an Oracle advisory — none of the signals we act on is present.","decisive":true},{"rule":"no-exploit-published","stage":"disposition","outcome":"skipped"}],"patchHintUrl":"https://bugzilla.redhat.com/show_bug.cgi?id=2531871","patchHintTier":"bugzilla","affectedProducts":[{"vendor":"redhat","product":"build_keycloak","isKnown":true,"cpe":"cpe:/a:redhat:build_keycloak:","source":"yaml"},{"vendor":"redhat","product":"red_hat_single_sign_on","isKnown":true,"cpe":"cpe:/a:redhat:red_hat_single_sign_on:7","source":"yaml"}]},"assessment":{"record":{"state":"active"},"protection":{"level":"none"},"action":{"state":"unverified","type":"patch-rule"},"review":{"state":"automated","basis":"upstream-data"}},"signals":{"hasPOC":false,"pocCount":0},"kev":{"inKEV":false},"epss":{"available":true,"score":0.00244,"percentile":0.15665},"ssvc":{"available":true,"exploitation":"none","automatable":"no","technicalImpact":"partial"},"patchHintUrl":"https://bugzilla.redhat.com/show_bug.cgi?id=2531871","patchHintTier":"bugzilla"}