{"answers":{"affected":"1 open source package ship an affected version, including tomcat. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-66299 in the wild and no public exploit code.","fix":"Upgrade tomcat to a fixed version for your release line: 9.0.121, 10.1.58 or 11.0.25.","what":"CVE-2026-66299 is a high-severity denial of service vulnerability in Apache Tomcat, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-66299 and fix it if it is affected.\n\nWhat it is: CVE-2026-66299 is a high-severity denial of service vulnerability in Apache Tomcat, published on 28 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-66299 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- tomcat (Bitnami): affected all versions; fixed in 9.0.121, 10.1.58, 11.0.25\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-2026-66299/ (Markdown: https://insights.sbomify.com/CVE-2026-66299/index.md)","id":"CVE-2026-66299","markdown":"https://insights.sbomify.com/CVE-2026-66299/index.md","name":"CVE-2026-66299","record":{"aliases":["BIT-tomcat-2026-66299","DEBIAN-CVE-2026-66299","GHSA-rpf9-hrjr-88fv","MINI-4jfg-gv9h-wrvv","MINI-8vrh-9fcp-2rf7","MINI-wh3h-4h9w-c425","OESA-2026-3233","UBUNTU-CVE-2026-66299"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"Apache Tomcat","requires_auth":"none","summary":"Attackers can cause denial of service in Apache Tomcat via the WebSocket chat example, affecting users who have not removed the examples application.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"tomcat","vendor":"apache"}],"cvss":{"score":7.5,"severity":"high","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:L/PR:N/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 vulnerability in Apache Tomcat's WebSocket chat example.\n\nThis issue affects Apache Tomcat: from 11.0.0-M20 through 11.0.24, from 10.1.24 through 10.1.57, from 9.0.89 through 9.0.120. Users who have followed the security guidance to remove the examples web application are not affected by this issue.\n\nUsers are recommended to remove the examples web application or to upgrade to version 11.0.25, 10.1.58 or 9.0.121 (when released), which fix the 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":"Apache Tomcat: DoS via WebSocket chat example","id":"CVE-2026-66299","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"apache:tomcat","products":["apache:tomcat"],"type":"denial_of_service","year":"2026"},"n_packages":1,"n_references":1,"next":{"headline":"SNOMED International Snowstorm reflected XSS","id":"CVE-2026-66300"},"packages":[{"ecosystem":"Bitnami","fixed":["9.0.121","10.1.58","11.0.25"],"introduced":["0","10.1.24","11.0.0"],"last_affected":[],"package":"tomcat","purl":"pkg:bitnami/tomcat","source":"BIT-tomcat-2026-66299"}],"prev":{"headline":"JS-view sandboxed output can synthesize keyboard events to trigger unconfirmed global shortcuts","id":"CVE-2026-66298"},"products":["Apache Tomcat"],"published":"2026-07-28","related":[{"cvss_score":10,"headline":"Apache Tomcat Path Equivalence","id":"CVE-2025-24813","kev_date_added":"2025-04-01","published":"2025-03-10"},{"cvss_score":9.8,"headline":"Apache Tomcat Remote Code Execution","id":"CVE-2016-8735","kev_date_added":"2023-05-12","published":"2017-04-06"},{"cvss_score":8.1,"headline":"Apache Tomcat Remote Code Execution","id":"CVE-2017-12617","kev_date_added":"2022-03-25","published":"2017-10-03"},{"cvss_score":8.1,"headline":"Apache Tomcat on Windows Remote Code Execution","id":"CVE-2017-12615","kev_date_added":"2022-03-25","published":"2017-09-19"},{"cvss_score":7.5,"headline":"Apache Tomcat Missing Encryption of Sensitive Data","id":"CVE-2026-34486","kev_date_added":"2026-08-04","published":"2026-04-09"},{"cvss_score":9.8,"headline":"Apache Tomcat: HTTP/2 no-authority bypass of strict SNI validation - CVE-2026-32990 fix incomplete","id":"CVE-2026-65637","kev_date_added":null,"published":"2026-08-25"},{"cvss_score":9.8,"headline":"Apache Tomcat: Limited replay attack possible with DIGEST authentication","id":"CVE-2026-65905","kev_date_added":null,"published":"2026-08-25"}],"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":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-28","vendors":["Apache Software Foundation"]},"summary":"Attackers can cause denial of service in Apache Tomcat via the WebSocket chat example, affecting users who have not removed the examples application.","url":"https://insights.sbomify.com/CVE-2026-66299/"}