{"answers":{"affected":"19 open source packages ship an affected version, including org.apache.tomcat.embed:tomcat-embed-core, tomcat and org.apache.tomcat:tomcat. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-34483 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: 10.1.54, 11.0.21 or 9.0.116.","what":"CVE-2026-34483 is a high-severity cross-site scripting vulnerability in Apache Tomcat, published on 9 Apr 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-2026-34483 and fix it if it is affected.\n\nWhat it is: CVE-2026-34483 is a high-severity cross-site scripting vulnerability in Apache Tomcat, published on 9 Apr 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-2026-34483 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 10.1.0-M1; fixed in 10.1.54\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 10.1.0-M1; fixed in 10.1.54\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 11.0.0-M1; fixed in 11.0.21\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 11.0.0-M1; fixed in 11.0.21\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 9.0.40; fixed in 9.0.116\n- org.apache.tomcat.embed:tomcat-embed-core (Maven): affected from 9.0.40; fixed in 9.0.116\n- tomcat (Bitnami): affected from 9.0.40; fixed in 9.0.117, 10.1.54, 11.0.21\n- org.apache.tomcat:tomcat (Maven): affected from 10.1.0-M1; fixed in 10.1.54\n- org.apache.tomcat:tomcat (Maven): affected from 10.1.0-M1; fixed in 10.1.54\n- org.apache.tomcat:tomcat (Maven): affected from 11.0.0-M1; fixed in 11.0.21\n- org.apache.tomcat:tomcat (Maven): affected from 11.0.0-M1; fixed in 11.0.21\n- org.apache.tomcat:tomcat (Maven): affected from 9.0.40; fixed in 9.0.116\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-2026-34483/ (Markdown: https://insights.sbomify.com/CVE-2026-34483/index.md)","id":"CVE-2026-34483","markdown":"https://insights.sbomify.com/CVE-2026-34483/index.md","name":"CVE-2026-34483","record":{"aliases":["BIT-tomcat-2026-34483","CLEANSTART-2026-NG48296","CLSA-2026-1776386117","CLSA-2026-1776818220","DEBIAN-CVE-2026-34483","GHSA-rv64-5gf8-9qq8","ROOT-APP-MAVEN-CVE-2026-34483","UBUNTU-CVE-2026-34483"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution","data_read"],"network_reachable":"yes","non_default_config":true,"product_category":"Apache Tomcat","requires_auth":"none","summary":"Attackers can inject malicious scripts into JSON access logs, potentially leading to code execution or data theft if logs are viewed in a vulnerable interface.","user_interaction":"not_required","vuln_class":"xss"},"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:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-116","name":"Improper Encoding or Escaping of Output"}],"description":"Improper Encoding or Escaping of Output vulnerability in the JsonAccessLogValve component of Apache Tomcat.\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.20, from 10.1.0-M1 through 10.1.53, from 9.0.40 through 9.0.116.\n\nUsers are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117 , which fix the issue.","ecosystems":["Bitnami","Maven"],"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: Incomplete escaping of JSON access logs","id":"CVE-2026-34483","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"apache:tomcat","products":["apache:tomcat"],"type":"xss","year":"2026"},"n_packages":19,"n_references":1,"next":{"headline":"A Shell Privilege Escalation vulnerability in Nokia 1830 Global Express (GX)","id":"CVE-2026-34484"},"packages":[{"ecosystem":"Bitnami","fixed":["9.0.117","10.1.54","11.0.21"],"introduced":["9.0.40","10.0.0","11.0.0"],"last_affected":[],"package":"tomcat","purl":"pkg:bitnami/tomcat","source":"BIT-tomcat-2026-34483"},{"ecosystem":"Maven","fixed":["10.1.54"],"introduced":["10.1.0-M1"],"last_affected":[],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":null,"source":"GHSA-rv64-5gf8-9qq8"},{"ecosystem":"Maven","fixed":["10.1.54"],"introduced":["10.1.0-M1"],"last_affected":[],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","source":"GHSA-rv64-5gf8-9qq8"},{"ecosystem":"Maven","fixed":["11.0.21"],"introduced":["11.0.0-M1"],"last_affected":[],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":null,"source":"GHSA-rv64-5gf8-9qq8"},{"ecosystem":"Maven","fixed":["11.0.21"],"introduced":["11.0.0-M1"],"last_affected":[],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","source":"GHSA-rv64-5gf8-9qq8"},{"ecosystem":"Maven","fixed":["9.0.116"],"introduced":["9.0.40"],"last_affected":[],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":null,"source":"GHSA-rv64-5gf8-9qq8"},{"ecosystem":"Maven","fixed":["9.0.116"],"introduced":["9.0.40"],"last_affected":[],"package":"org.apache.tomcat.embed:tomcat-embed-core","purl":"pkg:maven/org.apache.tomcat.embed/tomcat-embed-core","source":"GHSA-rv64-5gf8-9qq8"},{"ecosystem":"Maven","fixed":["10.1.54"],"introduced":["10.1.0-M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":null,"source":"GHSA-rv64-5gf8-9qq8"},{"ecosystem":"Maven","fixed":["10.1.54"],"introduced":["10.1.0-M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","source":"GHSA-rv64-5gf8-9qq8"},{"ecosystem":"Maven","fixed":["11.0.21"],"introduced":["11.0.0-M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":null,"source":"GHSA-rv64-5gf8-9qq8"},{"ecosystem":"Maven","fixed":["11.0.21"],"introduced":["11.0.0-M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","source":"GHSA-rv64-5gf8-9qq8"},{"ecosystem":"Maven","fixed":["9.0.116"],"introduced":["9.0.40"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":null,"source":"GHSA-rv64-5gf8-9qq8"},{"ecosystem":"Maven","fixed":["9.0.116"],"introduced":["9.0.40"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","source":"GHSA-rv64-5gf8-9qq8"},{"ecosystem":"Maven","fixed":["10.1.54"],"introduced":["10.1.0-M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat-catalina","purl":null,"source":"GHSA-rv64-5gf8-9qq8"},{"ecosystem":"Maven","fixed":["10.1.54"],"introduced":["10.1.0-M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat-catalina","purl":"pkg:maven/org.apache.tomcat/tomcat-catalina","source":"GHSA-rv64-5gf8-9qq8"},{"ecosystem":"Maven","fixed":["11.0.21"],"introduced":["11.0.0-M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat-catalina","purl":null,"source":"GHSA-rv64-5gf8-9qq8"},{"ecosystem":"Maven","fixed":["11.0.21"],"introduced":["11.0.0-M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat-catalina","purl":"pkg:maven/org.apache.tomcat/tomcat-catalina","source":"GHSA-rv64-5gf8-9qq8"},{"ecosystem":"Maven","fixed":["9.0.116"],"introduced":["9.0.40"],"last_affected":[],"package":"org.apache.tomcat:tomcat-catalina","purl":null,"source":"GHSA-rv64-5gf8-9qq8"},{"ecosystem":"Maven","fixed":["9.0.116"],"introduced":["9.0.40"],"last_affected":[],"package":"org.apache.tomcat:tomcat-catalina","purl":"pkg:maven/org.apache.tomcat/tomcat-catalina","source":"GHSA-rv64-5gf8-9qq8"}],"prev":{"headline":"Apache Log4j JSON Template Layout: Improper serialization of non-finite floating-point values in JsonTemplateLayout","id":"CVE-2026-34481"},"products":["Apache Tomcat"],"published":"2026-04-09","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":"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":"2026-04-10","vendors":["Apache Software Foundation"]},"summary":"Attackers can inject malicious scripts into JSON access logs, potentially leading to code execution or data theft if logs are viewed in a vulnerable interface.","url":"https://insights.sbomify.com/CVE-2026-34483/"}