{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-64998 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2025-64998 yet. Limit exposure of the affected software until one is available.","what":"CVE-2025-64998 is a high-severity vulnerability in Checkmk Checkmk, published on 24 Mar 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2025-64998 and fix it if it is affected.\n\nWhat it is: CVE-2025-64998 is a high-severity vulnerability in Checkmk Checkmk, published on 24 Mar 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2025-64998 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-2025-64998/ (Markdown: https://insights.sbomify.com/CVE-2025-64998/index.md)","id":"CVE-2025-64998","markdown":"https://insights.sbomify.com/CVE-2025-64998/index.md","name":"CVE-2025-64998","record":{"aliases":["GHSA-6642-x6x4-g343","UBUNTU-CVE-2025-64998"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["account_takeover","privilege_escalation"],"network_reachable":"yes","non_default_config":true,"product_category":"IT monitoring software","requires_auth":"high_privilege","summary":"Remote site administrators can hijack central site sessions by forging cookies due to exposed signing secrets in distributed Checkmk setups.","user_interaction":"required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Checkmk","cpe":[{"product":"checkmk","vendor":"checkmk"}],"cvss":{"score":7.3,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-522","name":"Insufficiently Protected Credentials"}],"description":"Exposure of session signing secret in Checkmk \u003c2.4.0p23, \u003c2.3.0p45 and 2.2.0 allows an administrator of a remote site with config sync enabled to hijack sessions on the central site by forging session cookies.","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":"Session hijacking via exposed session signing secret in distributed Checkmk setups","id":"CVE-2025-64998","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"checkmk:checkmk","products":["checkmk:checkmk"],"type":"information_disclosure","year":"2025"},"n_packages":0,"n_references":1,"next":{"headline":"Cross-site scripting in HTML logs of Synthetic Monitoring test services","id":"CVE-2025-64999"},"packages":[],"prev":{"headline":"Insufficient permission validation when showing agent information","id":"CVE-2025-64997"},"products":["Checkmk"],"published":"2026-03-24","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":"total"},"state":"PUBLISHED","updated":"2026-03-25","vendors":["Checkmk GmbH"]},"summary":"Remote site administrators can hijack central site sessions by forging cookies due to exposed signing secrets in distributed Checkmk setups.","url":"https://insights.sbomify.com/CVE-2025-64998/"}