{"answers":{"affected":"1 open source package ship an affected version, including keycloak. It affects 4 products.","exploited":"There is no known exploitation of CVE-2026-16093 in the wild and no public exploit code.","fix":"Upgrade keycloak to 26.7.3 or later.","what":"CVE-2026-16093 is a medium-severity authentication bypass vulnerability in Redhat Build of Keycloak, published on 17 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-16093 and fix it if it is affected.\n\nWhat it is: CVE-2026-16093 is a medium-severity authentication bypass vulnerability in Redhat Build of Keycloak, published on 17 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-16093 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- keycloak (Bitnami): affected all versions; fixed in 26.7.3\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-2026-16093/ (Markdown: https://insights.sbomify.com/CVE-2026-16093/index.md)","id":"CVE-2026-16093","markdown":"https://insights.sbomify.com/CVE-2026-16093/index.md","name":"CVE-2026-16093","record":{"aliases":["BIT-keycloak-2026-16093","CLEANSTART-2026-AH74122","GHSA-jmhg-9c54-p575"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Keycloak identity server","requires_auth":"low_privilege","summary":"Attackers with valid credentials can bypass signed JWT policies by sending unsigned headers, allowing authentication via weaker client secret methods.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"build_of_keycloak","vendor":"redhat"},{"product":"data_grid","vendor":"redhat"},{"product":"jboss_enterprise_application_platform_expansion_pack","vendor":"redhat"},{"product":"single_sign-on","vendor":"redhat"}],"cvss":{"score":5.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-807","name":"Reliance on Untrusted Inputs in a Security Decision"}],"description":"Keycloak provides a mechanism called Client Policies to enforce security requirements on clients, such as requiring them to use signed JWTs for authentication. A flaw was discovered where this enforcement can be bypassed. An attacker with valid client credentials can provide a fake, unsigned assertion header that tricks the system into thinking the policy requirements have been met. This allows the attacker to authenticate using simpler methods like a client secret even when the administrator has mandated more secure, signed assertions.","ecosystems":["Bitnami"],"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":"Auth bypass in Red Hat Data Grid 8","id":"CVE-2026-16093","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"redhat:build_of_keycloak","products":["redhat:build_of_keycloak","redhat:single_sign-on"],"type":"auth_bypass","year":"2026"},"n_packages":1,"n_references":4,"next":{"headline":"Invisible Anti-Spam \u0026 CAPTCHA \u003c= 5.1 - Authenticated (Editor+) SQL Injection via 'key' Parameter","id":"CVE-2026-16094"},"packages":[{"ecosystem":"Bitnami","fixed":["26.7.3"],"introduced":["0"],"last_affected":[],"package":"keycloak","purl":"pkg:bitnami/keycloak","source":"BIT-keycloak-2026-16093"}],"prev":{"headline":"Improved Save Button \u003c= 1.2.1 - Authenticated (Author+) Second-Order SQL Injection via 'meta_key' Parameter","id":"CVE-2026-16092"},"products":["Red Hat Data Grid 8","Red Hat JBoss Enterprise Application Platform Expansion Pack","Red Hat Single Sign-On 7","Red Hat build of Keycloak 26.6","Red Hat build of Keycloak 26.6.7"],"published":"2026-07-17","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":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-09-16","vendors":["Red Hat"]},"summary":"Attackers with valid credentials can bypass signed JWT policies by sending unsigned headers, allowing authentication via weaker client secret methods.","url":"https://insights.sbomify.com/CVE-2026-16093/"}