{"answers":{"affected":"2 open source packages ship an affected version, including org.keycloak:keycloak-ldap-federation. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-9801 in the wild and no public exploit code.","fix":"Upgrade org.keycloak:keycloak-ldap-federation to 26.6.3 or later.","what":"CVE-2026-9801 is a medium-severity denial of service vulnerability in Redhat Build of Keycloak, published on 28 May 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-9801 and fix it if it is affected.\n\nWhat it is: CVE-2026-9801 is a medium-severity denial of service vulnerability in Redhat Build of Keycloak, published on 28 May 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-9801 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.keycloak:keycloak-ldap-federation (Maven): affected all versions; fixed in 26.6.3\n- org.keycloak:keycloak-ldap-federation (Maven): affected all versions; fixed in 26.6.3\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-2026-9801/ (Markdown: https://insights.sbomify.com/CVE-2026-9801/index.md)","id":"CVE-2026-9801","markdown":"https://insights.sbomify.com/CVE-2026-9801/index.md","name":"CVE-2026-9801","record":{"aliases":["ECHO-3411-bdf5-a850","GHSA-f6r7-6w34-x2gp","MINI-2qh8-39g9-2wxh","MINI-qhfc-6h7f-hmxc"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Keycloak identity server","requires_auth":"high_privilege","summary":"A remote attacker with high privileges can cause a denial of service by triggering an OutOfMemoryError via a malformed LDAP response.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"build_of_keycloak","vendor":"redhat"}],"cvss":{"score":4.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-1284","name":"Improper Validation of Specified Quantity in Input"}],"description":"A flaw was found in Keycloak. A remote attacker with high privileges, such as a realm administrator configuring a malicious Lightweight Directory Access Protocol (LDAP) server or an attacker compromising an upstream LDAP server, could exploit this vulnerability. By sending a malformed LDAP password policy response during a password authentication request, the attacker can trigger an OutOfMemoryError. This causes the Keycloak Java Virtual Machine (JVM) to terminate, leading to a denial of service (DoS) for all realms on the affected node.","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: denial of service via malformed ldap password policy response","id":"CVE-2026-9801","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"redhat:build_of_keycloak","products":["redhat:build_of_keycloak"],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":6,"next":{"headline":"Keycloak: keycloak: unauthorized account access via replayed refresh tokens after cluster restart","id":"CVE-2026-9802"},"packages":[{"ecosystem":"Maven","fixed":["26.6.3"],"introduced":["0"],"last_affected":[],"package":"org.keycloak:keycloak-ldap-federation","purl":null,"source":"GHSA-f6r7-6w34-x2gp"},{"ecosystem":"Maven","fixed":["26.6.3"],"introduced":["0"],"last_affected":[],"package":"org.keycloak:keycloak-ldap-federation","purl":"pkg:maven/org.keycloak/keycloak-ldap-federation","source":"GHSA-f6r7-6w34-x2gp"}],"prev":{"headline":"Keycloak-policy-enforcer: keycloak policy enforcer: authorization bypass via incorrect uri comparison","id":"CVE-2026-9800"},"products":["Red Hat build of Keycloak 26.4","Red Hat build of Keycloak 26.4.13","Red Hat build of Keycloak 26.6","Red Hat build of Keycloak 26.6.3"],"published":"2026-05-28","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":"2026-06-26","vendors":["Red Hat"]},"summary":"A remote attacker with high privileges can cause a denial of service by triggering an OutOfMemoryError via a malformed LDAP response.","url":"https://insights.sbomify.com/CVE-2026-9801/"}