{"answers":{"affected":"3 open source packages ship an affected version, including org.keycloak:keycloak-server-spi-private and keycloak. It affects 2 products.","exploited":"There is no known exploitation of CVE-2026-0871 in the wild and no public exploit code.","fix":"Upgrade org.keycloak:keycloak-server-spi-private to 26.5.2 or later.","what":"CVE-2026-0871 is a medium-severity missing authorization vulnerability in Redhat Build of Keycloak, published on 27 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-0871 and fix it if it is affected.\n\nWhat it is: CVE-2026-0871 is a medium-severity missing authorization vulnerability in Redhat Build of Keycloak, published on 27 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-0871 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.keycloak:keycloak-server-spi-private (Maven): affected all versions; fixed in 26.5.2\n- org.keycloak:keycloak-server-spi-private (Maven): affected all versions; fixed in 26.5.2\n- keycloak (Bitnami): affected all versions; fixed in 26.4.9\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-2026-0871/ (Markdown: https://insights.sbomify.com/CVE-2026-0871/index.md)","id":"CVE-2026-0871","markdown":"https://insights.sbomify.com/CVE-2026-0871/index.md","name":"CVE-2026-0871","record":{"aliases":["BIT-keycloak-2026-0871","ECHO-738b-62c7-508f","GHSA-v4jw-m6rm-399h","MINI-mhh6-r3xq-h4c4","MINI-rpvp-r4gf-cgxh"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Keycloak identity server","requires_auth":"high_privilege","summary":"Administrators can bypass restrictions to modify unmanaged user attributes, leading to unauthorized profile changes in Keycloak deployments.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"build_of_keycloak","vendor":"redhat"},{"product":"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:H/A:N","version":"3.1"},"cwes":[{"id":"CWE-266","name":"Incorrect Privilege Assignment"}],"description":"A flaw was found in Keycloak. An administrator with `manage-users` permission can bypass the \"Only administrators can view\" setting for unmanaged attributes, allowing them to modify these attributes. This improper access control can lead to unauthorized changes to user profiles, even when the system is configured to restrict such modifications.","ecosystems":["Bitnami","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":"Org.keycloak/keycloak-services: keycloak: unauthorized modification of unmanaged user attributes by administrators","id":"CVE-2026-0871","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"redhat:build_of_keycloak","products":["redhat:build_of_keycloak","redhat:keycloak"],"type":"missing_authorization","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"Improper Certificate Validation vulnerability in Thales SafeNet Agent for Windows Logon","id":"CVE-2026-0872"},"packages":[{"ecosystem":"Bitnami","fixed":["26.4.9"],"introduced":["0"],"last_affected":[],"package":"keycloak","purl":"pkg:bitnami/keycloak","source":"BIT-keycloak-2026-0871"},{"ecosystem":"Maven","fixed":["26.5.2"],"introduced":["0"],"last_affected":[],"package":"org.keycloak:keycloak-server-spi-private","purl":null,"source":"GHSA-v4jw-m6rm-399h"},{"ecosystem":"Maven","fixed":["26.5.2"],"introduced":["0"],"last_affected":[],"package":"org.keycloak:keycloak-server-spi-private","purl":"pkg:maven/org.keycloak/keycloak-server-spi-private","source":"GHSA-v4jw-m6rm-399h"}],"prev":{"headline":"GIGABYTE｜MacroHub - Local Privilege Escalation","id":"CVE-2026-0870"},"products":["Red Hat JBoss Enterprise Application Platform 8","Red Hat JBoss Enterprise Application Platform Expansion Pack","Red Hat Single Sign-On 7","Red Hat build of Keycloak 26.4","Red Hat build of Keycloak 26.4.9"],"published":"2026-02-27","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":"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":"2026-03-06","vendors":["Red Hat"]},"summary":"Administrators can bypass restrictions to modify unmanaged user attributes, leading to unauthorized profile changes in Keycloak deployments.","url":"https://insights.sbomify.com/CVE-2026-0871/"}