{"answers":{"affected":"2 open source packages ship an affected version, including org.keycloak:keycloak-core. It affects 2 products.","exploited":"There is no known exploitation of CVE-2020-27826 in the wild and no public exploit code.","fix":"Upgrade org.keycloak:keycloak-core to 12.0.0 or later.","what":"CVE-2020-27826 is a medium-severity vulnerability in Redhat Keycloak, published on 28 May 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-27826 and fix it if it is affected.\n\nWhat it is: CVE-2020-27826 is a medium-severity vulnerability in Redhat Keycloak, published on 28 May 2021. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-27826 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.keycloak:keycloak-core (Maven): affected all versions; fixed in 12.0.0\n- org.keycloak:keycloak-core (Maven): affected all versions; fixed in 12.0.0\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-2020-27826/ (Markdown: https://insights.sbomify.com/CVE-2020-27826/index.md)","id":"CVE-2020-27826","markdown":"https://insights.sbomify.com/CVE-2020-27826/index.md","name":"CVE-2020-27826","record":{"aliases":["GHSA-m9cj-v55f-8x26","RHSA-2020:5526","RHSA-2020:5527","RHSA-2020:5528"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["privilege_escalation","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Keycloak identity server","requires_auth":"low_privilege","summary":"Attackers can modify their own NameID attribute via the Account REST API to impersonate admin users, leading to privilege escalation.","user_interaction":"not_required","vuln_class":"privilege_escalation"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"keycloak","vendor":"redhat"},{"product":"single_sign-on","vendor":"redhat"}],"cvss":{"score":4.2,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-250","name":"Execution with Unnecessary Privileges"}],"description":"A flaw was found in Keycloak before version 12.0.0 where it is possible to update the user's metadata attributes using Account REST API. This flaw allows an attacker to change its own NameID attribute to impersonate the admin user for any particular application.","ecosystems":["Maven","Red Hat:red_hat_single_sign_on:7::el6","Red Hat:red_hat_single_sign_on:7::el7","Red Hat:red_hat_single_sign_on:7::el8"],"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":"Authentication Bypass in keycloak","id":"CVE-2020-27826","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"redhat:keycloak","products":["redhat:keycloak","redhat:single_sign-on"],"type":"privilege_escalation","year":"2020"},"n_packages":8,"n_references":1,"next":{"headline":"Denial of service in lldp/openvswitch","id":"CVE-2020-27827"},"packages":[{"ecosystem":"Maven","fixed":["12.0.0"],"introduced":["0"],"last_affected":[],"package":"org.keycloak:keycloak-core","purl":null,"source":"GHSA-m9cj-v55f-8x26"},{"ecosystem":"Maven","fixed":["12.0.0"],"introduced":["0"],"last_affected":[],"package":"org.keycloak:keycloak-core","purl":"pkg:maven/org.keycloak/keycloak-core","source":"GHSA-m9cj-v55f-8x26"},{"ecosystem":"Red Hat:red_hat_single_sign_on:7::el6","fixed":["0:9.0.10-1.redhat_00001.1.el6sso"],"introduced":["0"],"last_affected":[],"package":"rh-sso7-keycloak","purl":"pkg:rpm/redhat/rh-sso7-keycloak","source":"RHSA-2020:5526"},{"ecosystem":"Red Hat:red_hat_single_sign_on:7::el6","fixed":["0:9.0.10-1.redhat_00001.1.el6sso"],"introduced":["0"],"last_affected":[],"package":"rh-sso7-keycloak-server","purl":"pkg:rpm/redhat/rh-sso7-keycloak-server","source":"RHSA-2020:5526"},{"ecosystem":"Red Hat:red_hat_single_sign_on:7::el7","fixed":["0:9.0.10-1.redhat_00001.1.el7sso"],"introduced":["0"],"last_affected":[],"package":"rh-sso7-keycloak","purl":"pkg:rpm/redhat/rh-sso7-keycloak","source":"RHSA-2020:5527"},{"ecosystem":"Red Hat:red_hat_single_sign_on:7::el7","fixed":["0:9.0.10-1.redhat_00001.1.el7sso"],"introduced":["0"],"last_affected":[],"package":"rh-sso7-keycloak-server","purl":"pkg:rpm/redhat/rh-sso7-keycloak-server","source":"RHSA-2020:5527"},{"ecosystem":"Red Hat:red_hat_single_sign_on:7::el8","fixed":["0:9.0.10-1.redhat_00001.1.el8sso"],"introduced":["0"],"last_affected":[],"package":"rh-sso7-keycloak","purl":"pkg:rpm/redhat/rh-sso7-keycloak","source":"RHSA-2020:5528"},{"ecosystem":"Red Hat:red_hat_single_sign_on:7::el8","fixed":["0:9.0.10-1.redhat_00001.1.el8sso"],"introduced":["0"],"last_affected":[],"package":"rh-sso7-keycloak-server","purl":"pkg:rpm/redhat/rh-sso7-keycloak-server","source":"RHSA-2020:5528"}],"prev":{"headline":"Use after free in kernel","id":"CVE-2020-27825"},"products":["keycloak"],"published":"2021-05-28","related":[{"cvss_score":10,"headline":"Keycloak vulnerable to cross-site scripting when validating URI-schemes on SAML and OIDC","id":"CVE-2022-4361","kev_date_added":null,"published":"2023-07-07"},{"cvss_score":9.8,"headline":"Keycloak vulnerable to privilege escalation on Token Exchange feature","id":"CVE-2022-1245","kev_date_added":null,"published":"2022-07-07"},{"cvss_score":9.6,"headline":"keycloak Self Stored Cross-site Scripting vulnerability","id":"CVE-2021-20195","kev_date_added":null,"published":"2021-05-28"},{"cvss_score":9.3,"headline":"Keycloak Authentication Error","id":"CVE-2019-14910","kev_date_added":null,"published":"2019-12-05"},{"cvss_score":9.3,"headline":"Keycloak Authentication Error","id":"CVE-2019-14909","kev_date_added":null,"published":"2019-12-04"},{"cvss_score":9.1,"headline":"Keycloak vulnerable to path traversal via double URL encoding","id":"CVE-2022-3782","kev_date_added":null,"published":"2023-01-11"},{"cvss_score":9.1,"headline":"keycloak vulnerable to unauthorized login via mail server setup","id":"CVE-2019-14837","kev_date_added":null,"published":"2020-01-07"}],"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":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"Attackers can modify their own NameID attribute via the Account REST API to impersonate admin users, leading to privilege escalation.","url":"https://insights.sbomify.com/CVE-2020-27826/"}