{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-26940 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2026-26940 is a medium-severity denial of service vulnerability in Elastic Kibana, published on 19 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-26940 and fix it if it is affected.\n\nWhat it is: CVE-2026-26940 is a medium-severity denial of service vulnerability in Elastic Kibana, published on 19 Mar 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-2026-26940 in the wild and no public exploit code.\n\nAffected product: Elastic Kibana. 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-2026-26940/ (Markdown: https://insights.sbomify.com/CVE-2026-26940/index.md)","id":"CVE-2026-26940","markdown":"https://insights.sbomify.com/CVE-2026-26940/index.md","name":"CVE-2026-26940","record":{"aliases":["GHSA-xfph-vq69-5ww2","MINI-546p-38p6-8hjq","MINI-5qrq-9577-qcqf","MINI-5wqg-gmgm-335r","MINI-6f5f-fcxx-767p","MINI-8q2f-p772-c2g9","MINI-m67q-33x7-xx97"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Kibana visualization plugin","requires_auth":"low_privilege","summary":"An authenticated user can cause a denial of service in Kibana by sending a crafted Timelion expression that triggers excessive memory allocation.","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-1284","name":"Improper Validation of Specified Quantity in Input"}],"description":"Improper Validation of Specified Quantity in Input (CWE-1284) in the Timelion visualization plugin in Kibana can lead Denial of Service via Excessive Allocation (CAPEC-130). The vulnerability allows an authenticated user to send a specially crafted Timelion expression that overwrites internal series data properties with an excessively large quantity value.","ecosystems":[],"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":"Improper Validation of Specified Quantity in Input in Kibana Leading to Denial of Service","id":"CVE-2026-26940","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"elastic:kibana","products":["elastic:kibana"],"type":"denial_of_service","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Command injection in PowerProtect Data Domain","id":"CVE-2026-26942"},"packages":[],"prev":{"headline":"Missing Authorization in Kibana Leading to Unauthorized Endpoint Response Action Configuration","id":"CVE-2026-26939"},"products":["Kibana"],"published":"2026-03-19","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":"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":"2026-03-19","vendors":["Elastic"]},"summary":"An authenticated user can cause a denial of service in Kibana by sending a crafted Timelion expression that triggers excessive memory allocation.","url":"https://insights.sbomify.com/CVE-2026-26940/"}