{"answers":{"affected":"4 open source packages ship an affected version, including org.keycloak:keycloak-services. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-4633 in the wild and no public exploit code.","fix":"Upgrade org.keycloak:keycloak-services to a fixed version for your release line: 26.4.12 or 26.6.1.","what":"CVE-2026-4633 is a low-severity vulnerability in Redhat Build of Keycloak, published on 23 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-4633 and fix it if it is affected.\n\nWhat it is: CVE-2026-4633 is a low-severity vulnerability in Redhat Build of Keycloak, published on 23 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-4633 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.keycloak:keycloak-services (Maven): affected all versions; fixed in 26.4.12\n- org.keycloak:keycloak-services (Maven): affected all versions; fixed in 26.4.12\n- org.keycloak:keycloak-services (Maven): affected from 26.5.0; fixed in 26.6.1\n- org.keycloak:keycloak-services (Maven): affected from 26.5.0; fixed in 26.6.1\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-4633/ (Markdown: https://insights.sbomify.com/CVE-2026-4633/index.md)","id":"CVE-2026-4633","markdown":"https://insights.sbomify.com/CVE-2026-4633/index.md","name":"CVE-2026-4633","record":{"aliases":["ECHO-6bb9-68c2-ffad","GHSA-rhgq-f8x5-j2jc","MINI-8wv9-wr6p-42xp","MINI-mjmw-589j-jgrw"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["data_read"],"network_reachable":"yes","non_default_config":true,"product_category":"Identity and Access Management","requires_auth":"none","summary":"Remote attackers can enumerate valid users via differential error messages in Keycloak when Organizations are enabled, leading to information disclosure.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"build_of_keycloak","vendor":"redhat"}],"cvss":{"score":3.7,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-209","name":"Generation of Error Message Containing Sensitive Information"}],"description":"A flaw was found in Keycloak. A remote attacker can exploit differential error messages during the identity-first login flow when Organizations are enabled. This vulnerability allows an attacker to determine the existence of users, leading to information disclosure through user enumeration.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Keycloak: keycloak: user enumeration via differential error messages","id":"CVE-2026-4633","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"redhat:build_of_keycloak","products":["redhat:build_of_keycloak"],"type":"information_disclosure","year":"2026"},"n_packages":4,"n_references":3,"next":{"headline":"Keycloak: keycloak: denial of service via excessive processing of openid connect scope parameters","id":"CVE-2026-4634"},"packages":[{"ecosystem":"Maven","fixed":["26.4.12"],"introduced":["0"],"last_affected":[],"package":"org.keycloak:keycloak-services","purl":null,"source":"GHSA-rhgq-f8x5-j2jc"},{"ecosystem":"Maven","fixed":["26.4.12"],"introduced":["0"],"last_affected":[],"package":"org.keycloak:keycloak-services","purl":"pkg:maven/org.keycloak/keycloak-services","source":"GHSA-rhgq-f8x5-j2jc"},{"ecosystem":"Maven","fixed":["26.6.1"],"introduced":["26.5.0"],"last_affected":[],"package":"org.keycloak:keycloak-services","purl":null,"source":"GHSA-rhgq-f8x5-j2jc"},{"ecosystem":"Maven","fixed":["26.6.1"],"introduced":["26.5.0"],"last_affected":[],"package":"org.keycloak:keycloak-services","purl":"pkg:maven/org.keycloak/keycloak-services","source":"GHSA-rhgq-f8x5-j2jc"}],"prev":{"headline":"itsourcecode Online Enrollment System Parameter index.php sql injection","id":"CVE-2026-4632"},"products":["Red Hat Build of Keycloak","Red Hat build of Keycloak 26.4.12"],"published":"2026-03-23","related":[{"cvss_score":8.8,"headline":"Keycloak-services: keycloak-services: dcr protocol mapper type-swap policy bypass allows privilege escalation","id":"CVE-2026-15572","kev_date_added":null,"published":"2026-08-05"},{"cvss_score":8.8,"headline":"Keycloak SAML Broken has Authentication Bypass by Primary Weakness","id":"CVE-2026-3047","kev_date_added":null,"published":"2026-03-05"},{"cvss_score":8.1,"headline":"Keycloak-services: keycloak-services: authorization bypass via unnormalized uri matching in pathmatcher","id":"CVE-2026-15573","kev_date_added":null,"published":"2026-08-05"},{"cvss_score":8.1,"headline":"Keycloak-services: keycloak-services: default dcr policy allows role forgery via user property mappers","id":"CVE-2026-16102","kev_date_added":null,"published":"2026-08-05"},{"cvss_score":8.1,"headline":"Org.keycloak/keycloak-quarkus-server: keycloak: unauthorized access via jwt authorization grant with disabled users","id":"CVE-2026-1609","kev_date_added":null,"published":"2026-07-16"},{"cvss_score":8.1,"headline":"Org.keycloak:keycloak-services: keycloak: authentication bypass via jwt algorithm confusion","id":"CVE-2026-11800","kev_date_added":null,"published":"2026-06-25"},{"cvss_score":8.1,"headline":"Keycloak-policy-enforcer: keycloak policy enforcer: authorization bypass via incorrect uri comparison","id":"CVE-2026-9800","kev_date_added":null,"published":"2026-06-25"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-22","vendors":["Red Hat"]},"summary":"Remote attackers can enumerate valid users via differential error messages in Keycloak when Organizations are enabled, leading to information disclosure.","url":"https://insights.sbomify.com/CVE-2026-4633/"}