{"answers":{"affected":"2 open source packages ship an affected version, including org.keycloak:keycloak-core. It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-0091 in the wild and no public exploit code.","fix":"Upgrade org.keycloak:keycloak-core to 20.0.3 or later.","what":"CVE-2023-0091 is a low-severity missing authorization vulnerability in Redhat Keycloak, published on 11 Jan 2023. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-0091 and fix it if it is affected.\n\nWhat it is: CVE-2023-0091 is a low-severity missing authorization vulnerability in Redhat Keycloak, published on 11 Jan 2023. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-0091 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 20.0.3\n- org.keycloak:keycloak-core (Maven): affected all versions; fixed in 20.0.3\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-2023-0091/ (Markdown: https://insights.sbomify.com/CVE-2023-0091/index.md)","id":"CVE-2023-0091","markdown":"https://insights.sbomify.com/CVE-2023-0091/index.md","name":"CVE-2023-0091","record":{"aliases":["GHSA-v436-q368-hvgg"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Keycloak identity server","requires_auth":"high_privilege","summary":"Attackers can access or modify sensitive information by exploiting improper client token revocation checks in Keycloak's credential flow.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"keycloak","vendor":"redhat"}],"cvss":{"score":3.8,"severity":"low","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"}],"description":"A flaw was found in Keycloak, where it did not properly check client tokens for possible revocation in its client credential flow. This flaw allows an attacker to access or modify potentially sensitive information.","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 has lack of validation of access token on client registrations endpoint","id":"CVE-2023-0091","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":"redhat:keycloak","products":["redhat:keycloak"],"type":"missing_authorization","year":"2023"},"n_packages":2,"n_references":1,"next":{"headline":"Juju controller - Arbitrary file reading vulnerability","id":"CVE-2023-0092"},"packages":[{"ecosystem":"Maven","fixed":["20.0.3"],"introduced":["0"],"last_affected":[],"package":"org.keycloak:keycloak-core","purl":null,"source":"GHSA-v436-q368-hvgg"},{"ecosystem":"Maven","fixed":["20.0.3"],"introduced":["0"],"last_affected":[],"package":"org.keycloak:keycloak-core","purl":"pkg:maven/org.keycloak/keycloak-core","source":"GHSA-v436-q368-hvgg"}],"prev":{"headline":"Proofpoint Enterprise Protection webservices unauthenticated RCE","id":"CVE-2023-0090"},"products":["Keycloak"],"published":"2023-01-11","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":"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":"2025-04-09","vendors":["redhat.com"]},"summary":"Attackers can access or modify sensitive information by exploiting improper client token revocation checks in Keycloak's credential flow.","url":"https://insights.sbomify.com/CVE-2023-0091/"}