{"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-2026-26936 in the wild and no public exploit code.","fix":"Upgrade kibana to a fixed version for your release line: 8.19.11 or 9.2.5.","what":"CVE-2026-26936 is a medium-severity denial of service vulnerability in Elastic Kibana, published on 26 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-26936 and fix it if it is affected.\n\nWhat it is: CVE-2026-26936 is a medium-severity denial of service vulnerability in Elastic Kibana, published on 26 Feb 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-26936 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- kibana (Bitnami): affected from 8.0.0; fixed in 8.19.11, 9.2.5\n- elk (Bitnami): affected from 8.0.0; fixed in 8.19.11, 9.2.5\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-2026-26936/ (Markdown: https://insights.sbomify.com/CVE-2026-26936/index.md)","id":"CVE-2026-26936","markdown":"https://insights.sbomify.com/CVE-2026-26936/index.md","name":"CVE-2026-26936","record":{"aliases":["BIT-elk-2026-26936","BIT-kibana-2026-26936","GHSA-rr4q-h87q-gm3v","MINI-57r2-cj4j-jg9f","MINI-8gwg-3x7j-x6hf","MINI-9qxm-rvgj-86wj","MINI-f5xh-qmvv-55r4","MINI-q773-82v2-8cfx"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Kibana AI Inference","requires_auth":"high_privilege","summary":"Attackers can cause denial of service in Kibana's AI Inference Anonymization Engine via inefficient regular expressions causing exponential blowup.","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":4.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-1333","name":"Inefficient Regular Expression Complexity"}],"description":"Inefficient Regular Expression Complexity (CWE-1333) in the AI Inference Anonymization Engine in Kibana can lead Denial of Service via Regular Expression Exponential Blowup (CAPEC-492).","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":"Inefficient Regular Expression Complexity in Kibana Leading to Denial of Service","id":"CVE-2026-26936","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":"Uncontrolled Resource Consumption in Kibana Leading to Denial of Service","id":"CVE-2026-26937"},"packages":[{"ecosystem":"Bitnami","fixed":["8.19.11","9.2.5"],"introduced":["8.0.0","9.0.0"],"last_affected":[],"package":"elk","purl":"pkg:bitnami/elk","source":"BIT-elk-2026-26936"},{"ecosystem":"Bitnami","fixed":["8.19.11","9.2.5"],"introduced":["8.0.0","9.0.0"],"last_affected":[],"package":"kibana","purl":"pkg:bitnami/kibana","source":"BIT-kibana-2026-26936"}],"prev":{"headline":"Improper Input Validation in Kibana Leading to Denial of Service","id":"CVE-2026-26935"},"products":["Kibana"],"published":"2026-02-26","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":"2026-02-26","vendors":["Elastic"]},"summary":"Attackers can cause denial of service in Kibana's AI Inference Anonymization Engine via inefficient regular expressions causing exponential blowup.","url":"https://insights.sbomify.com/CVE-2026-26936/"}