{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-2020 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-2020 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-2020 is a medium-severity missing authorization vulnerability in Checkmk Checkmk, published on 18 Apr 2023. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2023-2020 and fix it if it is affected.\n\nWhat it is: CVE-2023-2020 is a medium-severity missing authorization vulnerability in Checkmk Checkmk, published on 18 Apr 2023. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2023-2020 in the wild and no public exploit code.\n\nAffected product: Checkmk Checkmk. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2023-2020/ (Markdown: https://insights.sbomify.com/CVE-2023-2020/index.md)","id":"CVE-2023-2020","markdown":"https://insights.sbomify.com/CVE-2023-2020/index.md","name":"CVE-2023-2020","record":{"aliases":["GHSA-w7j6-p4c4-j78m","UBUNTU-CVE-2023-2020"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"IT monitoring software","requires_auth":"low_privilege","summary":"Unauthorized users can schedule downtimes for any host via the REST API due to insufficient permission checks in Checkmk.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Tribe29","cpe":[{"product":"checkmk","vendor":"checkmk"}],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-863","name":"Incorrect Authorization"},{"id":"CWE-280","name":"Improper Handling of Insufficient Permissions or Privileges"}],"description":"Insufficient permission checks in the REST API in Tribe29 Checkmk \u003c= 2.1.0p27 and \u003c= 2.2.0b4 (beta) allow unauthorized users to schedule downtimes for any host.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"Unauthorized scheduling of downtimes via REST API","id":"CVE-2023-2020","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"checkmk:checkmk","products":["checkmk:checkmk"],"type":"missing_authorization","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"Cross-site Scripting (XSS) - Stored in nilsteampassnet/teampass","id":"CVE-2023-2021"},"packages":[],"prev":{"headline":"Use after free in Linux kernel's netdevsim device driver","id":"CVE-2023-2019"},"products":["Checkmk"],"published":"2023-04-18","related":[{"cvss_score":9.3,"headline":"omd: Local privilege escalation when executing omd commands as root","id":"CVE-2025-39666","kev_date_added":null,"published":"2026-04-07"},{"cvss_score":9.2,"headline":"Fix 2FA bypass via RestAPI","id":"CVE-2024-8606","kev_date_added":null,"published":"2024-09-23"},{"cvss_score":9.1,"headline":"PHP code injection in watolib","id":"CVE-2022-46836","kev_date_added":null,"published":"2023-02-20"},{"cvss_score":8.8,"headline":"Privilege Escalation in Windows License plugin for Checkmk Windows Agent","id":"CVE-2025-32919","kev_date_added":null,"published":"2025-10-09"},{"cvss_score":8.8,"headline":"Privilege escalation in Windows agent","id":"CVE-2024-28827","kev_date_added":null,"published":"2024-07-10"},{"cvss_score":8.8,"headline":"1-Click compromize via CSRF","id":"CVE-2024-28828","kev_date_added":null,"published":"2024-07-10"},{"cvss_score":8.8,"headline":"Unrestricted upload and download paths in check_sftp","id":"CVE-2024-28826","kev_date_added":null,"published":"2024-05-29"}],"sources":[{"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":"2025-02-05","vendors":["Tribe29"]},"summary":"Unauthorized users can schedule downtimes for any host via the REST API due to insufficient permission checks in Checkmk.","url":"https://insights.sbomify.com/CVE-2023-2020/"}