{"answers":{"affected":"2 open source packages ship an affected version, including kibana and elk. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-42400 in the wild and no public exploit code.","fix":"Upgrade kibana to a fixed version for your release line: 8.19.16, 9.3.5 or 9.4.2.","what":"CVE-2026-42400 is a medium-severity denial of service vulnerability in Elastic Kibana, published on 28 May 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-42400 and fix it if it is affected.\n\nWhat it is: CVE-2026-42400 is a medium-severity denial of service vulnerability in Elastic Kibana, published on 28 May 2026. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-42400 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- kibana (Bitnami): affected from 8.0.0; fixed in 8.19.16, 9.3.5, 9.4.2\n- elk (Bitnami): affected from 8.0.0; fixed in 8.19.16, 9.3.5, 9.4.2\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-2026-42400/ (Markdown: https://insights.sbomify.com/CVE-2026-42400/index.md)","id":"CVE-2026-42400","markdown":"https://insights.sbomify.com/CVE-2026-42400/index.md","name":"CVE-2026-42400","record":{"aliases":["BIT-elk-2026-42400","BIT-kibana-2026-42400","GHSA-mhgf-jqhm-p7p3","MINI-2c7w-47j9-hx8m","MINI-5hp2-x3v9-85fj","MINI-7266-6vv7-59jw","MINI-95fp-qjcq-2rp2","MINI-mpjp-3mh2-24mx","MINI-wh7w-86w8-f9f2","MINI-xp9v-4fm2-4jwr"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Kibana visualization tool","requires_auth":"low_privilege","summary":"An authenticated user can cause a Kibana denial of service by sending crafted compressed requests that trigger excessive resource consumption before authorization checks.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"elastic","cpe":[{"product":"kibana","vendor":"elastic"}],"cvss":{"score":6.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-400","name":"Uncontrolled Resource Consumption"}],"description":"Uncontrolled Resource Consumption (CWE-400) in Kibana can lead to denial of service via Excessive Allocation (CAPEC-130). An authenticated user can send a specially crafted compressed request payload that is processed prior to authorization checks, causing excessive memory and CPU resource consumption that can result in a Kibana instance becoming unresponsive or crashing.","ecosystems":["Bitnami"],"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":"Uncontrolled Resource Consumption in Kibana Leading to Denial of Service","id":"CVE-2026-42400","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"elastic:kibana","products":["elastic:kibana"],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":1,"next":{"headline":"Improper Neutralization of Input During Web Page Generation in Kibana Leading to Stored HTML Injection","id":"CVE-2026-42401"},"packages":[{"ecosystem":"Bitnami","fixed":["8.19.16","9.3.5","9.4.2"],"introduced":["8.0.0","9.0.0","9.4.0"],"last_affected":[],"package":"elk","purl":"pkg:bitnami/elk","source":"BIT-elk-2026-42400"},{"ecosystem":"Bitnami","fixed":["8.19.16","9.3.5","9.4.2"],"introduced":["8.0.0","9.0.0","9.4.0"],"last_affected":[],"package":"kibana","purl":"pkg:bitnami/kibana","source":"BIT-kibana-2026-42400"}],"prev":{"headline":"Uncontrolled Resource Consumption in Kibana Leading to Denial of Service","id":"CVE-2026-42399"},"products":["Kibana"],"published":"2026-05-28","related":[{"cvss_score":9.8,"headline":"Kibana Arbitrary Code Execution","id":"CVE-2019-7609","kev_date_added":"2022-01-10","published":"2019-03-25"},{"cvss_score":9.9,"headline":"Kibana arbitrary code execution via prototype pollution","id":"CVE-2025-25015","kev_date_added":null,"published":"2025-03-05"},{"cvss_score":9.9,"headline":"Deserialization in Kibana","id":"CVE-2024-37288","kev_date_added":null,"published":"2024-09-09"},{"cvss_score":9.9,"headline":"Code injection in Kibana","id":"CVE-2023-31415","kev_date_added":null,"published":"2023-05-04"},{"cvss_score":9.8,"headline":"Information disclosure in Kibana","id":"CVE-2018-17245","kev_date_added":null,"published":"2018-12-20"},{"cvss_score":9.8,"headline":"Code injection in Kibana","id":"CVE-2018-17246","kev_date_added":null,"published":"2018-12-20"},{"cvss_score":9.1,"headline":"Kibana arbitrary code execution via prototype pollution","id":"CVE-2025-25014","kev_date_added":null,"published":"2025-05-06"}],"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":"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":"2026-05-29","vendors":["Elastic"]},"summary":"An authenticated user can cause a Kibana denial of service by sending crafted compressed requests that trigger excessive resource consumption before authorization checks.","url":"https://insights.sbomify.com/CVE-2026-42400/"}