{"answers":{"affected":"13 open source packages ship an affected version, including org.apache.tomcat.embed:tomcat-embed-core, tomcat and org.apache.tomcat:tomcat. It affects 20 products.","exploited":"There is no known exploitation of CVE-2020-1935 in the wild and no public exploit code.","fix":"Upgrade org.apache.tomcat.embed:tomcat-embed-core to a fixed version for your release line: 7.0.100, 8.5.51 or 9.0.31.","what":"CVE-2020-1935 is a medium-severity vulnerability in Apache Tomcat, published on 24 Feb 2020. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-1935 and fix it if it is affected.\n\nWhat it is: CVE-2020-1935 is a medium-severity vulnerability in Apache Tomcat, published on 24 Feb 2020. 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-2020-1935 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected all versions; fixed in 7.0.100\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected all versions; fixed in 7.0.100\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 8.0.0; fixed in 8.5.51\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 8.0.0; fixed in 8.5.51\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 9.0.0; fixed in 9.0.31\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 9.0.0; fixed in 9.0.31\n- tomcat (Bitnami): affected from 7.0.0; fixed in 7.0.100, 8.5.51, 9.0.31\n- org.apache.tomcat:tomcat (Maven): affected all versions; fixed in 7.0.100\n- org.apache.tomcat:tomcat (Maven): affected all versions; fixed in 7.0.100\n- org.apache.tomcat:tomcat (Maven): affected from 8.0.0; fixed in 8.5.51\n- org.apache.tomcat:tomcat (Maven): affected from 8.0.0; fixed in 8.5.51\n- org.apache.tomcat:tomcat (Maven): affected from 9.0.0; fixed in 9.0.31\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-2020-1935/ (Markdown: https://insights.sbomify.com/CVE-2020-1935/index.md)","id":"CVE-2020-1935","markdown":"https://insights.sbomify.com/CVE-2020-1935/index.md","name":"CVE-2020-1935","record":{"aliases":["BIT-tomcat-2020-1935","DEBIAN-CVE-2020-1935","GHSA-qxf4-chvg-4r8r","RHSA-2020:5020","UBUNTU-CVE-2020-1935"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"Apache Tomcat","requires_auth":"none","summary":"Attackers can perform HTTP request smuggling via invalid headers when Tomcat is behind a specific misconfigured reverse proxy.","user_interaction":"not_required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"tomcat","vendor":"apache"},{"product":"ubuntu_linux","vendor":"canonical"},{"product":"debian_linux","vendor":"debian"},{"product":"data_availability_services","vendor":"netapp"},{"product":"oncommand_system_manager","vendor":"netapp"},{"product":"leap","vendor":"opensuse"},{"product":"agile_engineering_data_management","vendor":"oracle"},{"product":"agile_product_lifecycle_management","vendor":"oracle"},{"product":"communications_element_manager","vendor":"oracle"},{"product":"communications_instant_messaging_server","vendor":"oracle"},{"product":"health_sciences_empirica_inspections","vendor":"oracle"},{"product":"health_sciences_empirica_signal","vendor":"oracle"},{"product":"hospitality_guest_access","vendor":"oracle"},{"product":"hyperion_infrastructure_technology","vendor":"oracle"},{"product":"instantis_enterprisetrack","vendor":"oracle"},{"product":"mysql_enterprise_monitor","vendor":"oracle"},{"product":"retail_order_broker","vendor":"oracle"},{"product":"siebel_ui_framework","vendor":"oracle"},{"product":"transportation_management","vendor":"oracle"},{"product":"workload_manager","vendor":"oracle"}],"cvss":{"score":4.8,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-444","name":"Inconsistent Interpretation of HTTP Requests"}],"description":"In Apache Tomcat 9.0.0.M1 to 9.0.30, 8.5.0 to 8.5.50 and 7.0.0 to 7.0.99 the HTTP header parsing code used an approach to end-of-line parsing that allowed some invalid HTTP headers to be parsed as valid. This led to a possibility of HTTP Request Smuggling if Tomcat was located behind a reverse proxy that incorrectly handled the invalid Transfer-Encoding header in a particular manner. Such a reverse proxy is considered unlikely.","ecosystems":["Bitnami","Maven","Red Hat:enterprise_linux:7::client","Red Hat:enterprise_linux:7::computenode","Red Hat:enterprise_linux:7::server","Red Hat:enterprise_linux:7::workstation"],"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":"Potential HTTP request smuggling in Apache Tomcat","id":"CVE-2020-1935","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"apache:tomcat","products":["apache:tomcat","canonical:ubuntu_linux","debian:debian_linux","netapp:data_availability_services","opensuse:leap","oracle:agile_product_lifecycle_management","oracle:communications_element_manager","oracle:communications_instant_messaging_server","oracle:hyperion_infrastructure_technology","oracle:instantis_enterprisetrack","oracle:mysql_enterprise_monitor","oracle:siebel_ui_framework"],"type":"other","year":"2020"},"n_packages":52,"n_references":19,"next":{"headline":"Stored XSS in Apache Ambari","id":"CVE-2020-1936"},"packages":[{"ecosystem":"Bitnami","fixed":["7.0.100","8.5.51","9.0.31"],"introduced":["7.0.0","8.5.0","9.0.0"],"last_affected":[],"package":"tomcat","purl":"pkg:bitnami/tomcat","source":"BIT-tomcat-2020-1935"},{"ecosystem":"Maven","fixed":["7.0.100"],"introduced":["0"],"last_affected":[],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":null,"source":"GHSA-qxf4-chvg-4r8r"},{"ecosystem":"Maven","fixed":["7.0.100"],"introduced":["0"],"last_affected":[],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","source":"GHSA-qxf4-chvg-4r8r"},{"ecosystem":"Maven","fixed":["8.5.51"],"introduced":["8.0.0"],"last_affected":[],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":null,"source":"GHSA-qxf4-chvg-4r8r"},{"ecosystem":"Maven","fixed":["8.5.51"],"introduced":["8.0.0"],"last_affected":[],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","source":"GHSA-qxf4-chvg-4r8r"},{"ecosystem":"Maven","fixed":["9.0.31"],"introduced":["9.0.0"],"last_affected":[],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":null,"source":"GHSA-qxf4-chvg-4r8r"},{"ecosystem":"Maven","fixed":["9.0.31"],"introduced":["9.0.0"],"last_affected":[],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","source":"GHSA-qxf4-chvg-4r8r"},{"ecosystem":"Maven","fixed":["7.0.100"],"introduced":["0"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":null,"source":"GHSA-qxf4-chvg-4r8r"},{"ecosystem":"Maven","fixed":["7.0.100"],"introduced":["0"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","source":"GHSA-qxf4-chvg-4r8r"},{"ecosystem":"Maven","fixed":["8.5.51"],"introduced":["8.0.0"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":null,"source":"GHSA-qxf4-chvg-4r8r"},{"ecosystem":"Maven","fixed":["8.5.51"],"introduced":["8.0.0"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","source":"GHSA-qxf4-chvg-4r8r"},{"ecosystem":"Maven","fixed":["9.0.31"],"introduced":["9.0.0"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":null,"source":"GHSA-qxf4-chvg-4r8r"},{"ecosystem":"Maven","fixed":["9.0.31"],"introduced":["9.0.0"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","source":"GHSA-qxf4-chvg-4r8r"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat","purl":"pkg:rpm/redhat/tomcat","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-admin-webapps","purl":"pkg:rpm/redhat/tomcat-admin-webapps","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-docs-webapp","purl":"pkg:rpm/redhat/tomcat-docs-webapp","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-el-2.2-api","purl":"pkg:rpm/redhat/tomcat-el-2.2-api","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-javadoc","purl":"pkg:rpm/redhat/tomcat-javadoc","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-jsp-2.2-api","purl":"pkg:rpm/redhat/tomcat-jsp-2.2-api","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-jsvc","purl":"pkg:rpm/redhat/tomcat-jsvc","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-lib","purl":"pkg:rpm/redhat/tomcat-lib","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-servlet-3.0-api","purl":"pkg:rpm/redhat/tomcat-servlet-3.0-api","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::client","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-webapps","purl":"pkg:rpm/redhat/tomcat-webapps","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat","purl":"pkg:rpm/redhat/tomcat","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-admin-webapps","purl":"pkg:rpm/redhat/tomcat-admin-webapps","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-docs-webapp","purl":"pkg:rpm/redhat/tomcat-docs-webapp","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-el-2.2-api","purl":"pkg:rpm/redhat/tomcat-el-2.2-api","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-javadoc","purl":"pkg:rpm/redhat/tomcat-javadoc","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-jsp-2.2-api","purl":"pkg:rpm/redhat/tomcat-jsp-2.2-api","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-jsvc","purl":"pkg:rpm/redhat/tomcat-jsvc","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-lib","purl":"pkg:rpm/redhat/tomcat-lib","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::computenode","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-webapps","purl":"pkg:rpm/redhat/tomcat-webapps","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat","purl":"pkg:rpm/redhat/tomcat","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-admin-webapps","purl":"pkg:rpm/redhat/tomcat-admin-webapps","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-docs-webapp","purl":"pkg:rpm/redhat/tomcat-docs-webapp","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-el-2.2-api","purl":"pkg:rpm/redhat/tomcat-el-2.2-api","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-javadoc","purl":"pkg:rpm/redhat/tomcat-javadoc","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-jsp-2.2-api","purl":"pkg:rpm/redhat/tomcat-jsp-2.2-api","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-jsvc","purl":"pkg:rpm/redhat/tomcat-jsvc","source":"RHSA-2020:5020"},{"ecosystem":"Red Hat:enterprise_linux:7::server","fixed":["0:7.0.76-16.el7_9"],"introduced":["0"],"last_affected":[],"package":"tomcat-lib","purl":"pkg:rpm/redhat/tomcat-lib","source":"RHSA-2020:5020"}],"prev":{"headline":"Memory corruption in Apache HTTP Server","id":"CVE-2020-1934"},"products":["Apache Tomcat"],"published":"2020-02-24","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":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"Red Hat","prefix":"RHSA"},{"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":"2026-10-08","vendors":["Apache"]},"summary":"Attackers can perform HTTP request smuggling via invalid headers when Tomcat is behind a specific misconfigured reverse proxy.","url":"https://insights.sbomify.com/CVE-2020-1935/"}