{"answers":{"affected":"1 open source package ship an affected version, including elasticsearch. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-102408 in the wild and no public exploit code.","fix":"Upgrade elasticsearch to a fixed version for your release line: 8.19.22, 9.4.8 or 9.5.5.","what":"CVE-2026-102408 is a medium-severity denial of service vulnerability in Elastic Elasticsearch, published on 6 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-102408 and fix it if it is affected.\n\nWhat it is: CVE-2026-102408 is a medium-severity denial of service vulnerability in Elastic Elasticsearch, published on 6 Oct 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-2026-102408 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- elasticsearch (Bitnami): affected from 8.19.0; fixed in 8.19.22, 9.4.8, 9.5.5\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-2026-102408/ (Markdown: https://insights.sbomify.com/CVE-2026-102408/index.md)","id":"CVE-2026-102408","markdown":"https://insights.sbomify.com/CVE-2026-102408/index.md","name":"CVE-2026-102408","record":{"aliases":["BIT-elasticsearch-2026-102408","GHSA-43f3-46vj-x5jc","MINI-32g4-fx64-6wwf","MINI-6874-7fxh-xfh6","MINI-g3vg-27mr-jm3m","MINI-gjvj-gcf8-4r72","MINI-j5wr-85ww-qrqc","MINI-mf2f-975f-g5qv","MINI-mpjj-686v-v64r","MINI-pf33-rmwh-r5hw","MINI-q695-prr7-955r","MINI-rm2r-8h23-53c2","MINI-vp65-qrx6-r833","MINI-wgpx-rcqv-f54m","MINI-wqwv-cwp9-6mw3","MINI-x2jf-5x96-wxgx"],"analysis":{"component_type":"server_software","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Elasticsearch search engine","requires_auth":"low_privilege","summary":"An authenticated user can cause denial of service in Elasticsearch by submitting complex regular expressions that trigger excessive CPU consumption.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"elastic","cpe":[{"product":"elasticsearch","vendor":"elastic"}],"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:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-1333","name":"Inefficient Regular Expression Complexity"}],"description":"Inefficient Regular Expression Complexity (CWE-1333) in Elasticsearch can lead to denial of service via Regular Expression Exponential Blowup (CAPEC-492). The ES|QL CHUNK function's recursive chunking strategy accepts a list of user-supplied regular expressions used as text-splitting separators, without validating their computational complexity or bounding their execution time. An authenticated user with read access to any text-based index can submit a specially crafted regular expression that triggers catastrophic backtracking, consuming excessive CPU on Elasticsearch worker threads and degrading query throughput for other tenants on the affected node. The cluster does not crash as a result of this issue.","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 Elasticsearch Leading to Denial of Service","id":"CVE-2026-102408","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"elastic:elasticsearch","products":["elastic:elasticsearch"],"type":"denial_of_service","year":"2026"},"n_packages":1,"n_references":1,"next":{"headline":"Uncontrolled Recursion in Elasticsearch Leading to Denial of Service","id":"CVE-2026-102409"},"packages":[{"ecosystem":"Bitnami","fixed":["8.19.22","9.4.8","9.5.5"],"introduced":["8.19.0","9.1.0","9.5.0"],"last_affected":[],"package":"elasticsearch","purl":"pkg:bitnami/elasticsearch","source":"BIT-elasticsearch-2026-102408"}],"prev":{"headline":"Incorrect Authorization in Elasticsearch Leading to Unauthorized Data Stream Modification","id":"CVE-2026-102407"},"products":["Elasticsearch"],"published":"2026-10-06","related":[{"cvss_score":9.8,"headline":"Elasticsearch Groovy Scripting Engine Remote Code Execution","id":"CVE-2015-1427","kev_date_added":"2022-03-25","published":"2015-02-17"},{"cvss_score":8.1,"headline":"Elasticsearch Remote Code Execution","id":"CVE-2014-3120","kev_date_added":"2022-03-25","published":"2014-07-28"},{"cvss_score":9.8,"headline":"Code injection in n/a","id":"CVE-2015-5377","kev_date_added":null,"published":"2018-03-06"},{"cvss_score":8.8,"headline":"Deserialization of Untrusted Data in Elasticsearch Leading to Remote Code Execution","id":"CVE-2026-72649","kev_date_added":null,"published":"2026-09-01"},{"cvss_score":8.8,"headline":"Use of Out-of-range Pointer Offset in the Elasticsearch Machine Learning Native Inference Process","id":"CVE-2026-72642","kev_date_added":null,"published":"2026-08-13"},{"cvss_score":8.8,"headline":"Privilege Escalation Flaw in Elasticsearch","id":"CVE-2020-7014","kev_date_added":null,"published":"2020-06-03"},{"cvss_score":8.8,"headline":"Improper Privilege Management in Elasticsearch","id":"CVE-2020-7009","kev_date_added":null,"published":"2020-03-31"}],"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":"2026-10-06","vendors":["Elastic"]},"summary":"An authenticated user can cause denial of service in Elasticsearch by submitting complex regular expressions that trigger excessive CPU consumption.","url":"https://insights.sbomify.com/CVE-2026-102408/"}