{"answers":{"affected":"9 open source packages ship an affected version, including org.apache.tomcat:tomcat and tomcat. It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-43980 in the wild and no public exploit code.","fix":"Upgrade org.apache.tomcat:tomcat to a fixed version for your release line: 10.0.20, 10.1.0-M14, 8.5.78 or 9.0.62.","what":"CVE-2021-43980 is a low-severity vulnerability in Apache Tomcat, published on 28 Sep 2022. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-43980 and fix it if it is affected.\n\nWhat it is: CVE-2021-43980 is a low-severity vulnerability in Apache Tomcat, published on 28 Sep 2022. 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-2021-43980 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.apache.tomcat:tomcat (Maven): affected from 10.0.0-M1; fixed in 10.0.20\n- org.apache.tomcat:tomcat (Maven): affected from 10.0.0-M1; fixed in 10.0.20\n- org.apache.tomcat:tomcat (Maven): affected from 10.1.0-M1; fixed in 10.1.0-M14\n- org.apache.tomcat:tomcat (Maven): affected from 10.1.0-M1; fixed in 10.1.0-M14\n- org.apache.tomcat:tomcat (Maven): affected from 8.5.0; fixed in 8.5.78\n- org.apache.tomcat:tomcat (Maven): affected from 8.5.0; fixed in 8.5.78\n- org.apache.tomcat:tomcat (Maven): affected from 9.0.0-M1; fixed in 9.0.62\n- org.apache.tomcat:tomcat (Maven): affected from 9.0.0-M1; fixed in 9.0.62\n- tomcat (Bitnami): affected from 8.5.0; fixed in 8.5.78, 9.0.61, 10.0.19\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-2021-43980/ (Markdown: https://insights.sbomify.com/CVE-2021-43980/index.md)","id":"CVE-2021-43980","markdown":"https://insights.sbomify.com/CVE-2021-43980/index.md","name":"CVE-2021-43980","record":{"aliases":["BIT-tomcat-2021-43980","DEBIAN-CVE-2021-43980","GHSA-jx7c-7mj5-9438","SUSE-SU-2022:4009-1","UBUNTU-CVE-2021-43980"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Apache Tomcat","requires_auth":"none","summary":"A concurrency bug in Apache Tomcat allows attackers to receive responses intended for other clients, leading to information disclosure.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"tomcat","vendor":"apache"},{"product":"debian_linux","vendor":"debian"}],"cvss":{"score":3.7,"severity":"low","source":"cisa-adp","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-362","name":"Concurrent Execution using Shared Resource with Improper Synchronization"}],"description":"The simplified implementation of blocking reads and writes introduced in Tomcat 10 and back-ported to Tomcat 9.0.47 onwards exposed a long standing (but extremely hard to trigger) concurrency bug in Apache Tomcat 10.1.0 to 10.1.0-M12, 10.0.0-M1 to 10.0.18, 9.0.0-M1 to 9.0.60 and 8.5.0 to 8.5.77 that could cause client connections to share an Http11Processor instance resulting in responses, or part responses, to be received by the wrong client.","ecosystems":["Bitnami","Maven","SUSE:Linux Enterprise Server 12 SP5","SUSE:Linux Enterprise Server for SAP Applications 12 SP5"],"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: Information disclosure","id":"CVE-2021-43980","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"apache:tomcat","products":["apache:tomcat","debian:debian_linux"],"type":"race_condition","year":"2021"},"n_packages":11,"n_references":4,"next":{"headline":"mySCADA myPRO","id":"CVE-2021-43981"},"packages":[{"ecosystem":"Bitnami","fixed":["8.5.78","9.0.61","10.0.19"],"introduced":["8.5.0","9.0.0","10.0.0"],"last_affected":[],"package":"tomcat","purl":"pkg:bitnami/tomcat","source":"BIT-tomcat-2021-43980"},{"ecosystem":"Maven","fixed":["10.0.20"],"introduced":["10.0.0-M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":null,"source":"GHSA-jx7c-7mj5-9438"},{"ecosystem":"Maven","fixed":["10.0.20"],"introduced":["10.0.0-M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","source":"GHSA-jx7c-7mj5-9438"},{"ecosystem":"Maven","fixed":["10.1.0-M14"],"introduced":["10.1.0-M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":null,"source":"GHSA-jx7c-7mj5-9438"},{"ecosystem":"Maven","fixed":["10.1.0-M14"],"introduced":["10.1.0-M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","source":"GHSA-jx7c-7mj5-9438"},{"ecosystem":"Maven","fixed":["8.5.78"],"introduced":["8.5.0"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":null,"source":"GHSA-jx7c-7mj5-9438"},{"ecosystem":"Maven","fixed":["8.5.78"],"introduced":["8.5.0"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","source":"GHSA-jx7c-7mj5-9438"},{"ecosystem":"Maven","fixed":["9.0.62"],"introduced":["9.0.0-M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":null,"source":"GHSA-jx7c-7mj5-9438"},{"ecosystem":"Maven","fixed":["9.0.62"],"introduced":["9.0.0-M1"],"last_affected":[],"package":"org.apache.tomcat:tomcat","purl":"pkg:maven/org.apache.tomcat/tomcat","source":"GHSA-jx7c-7mj5-9438"},{"ecosystem":"SUSE:Linux Enterprise Server 12 SP5","fixed":["9.0.36-3.90.1"],"introduced":["0"],"last_affected":[],"package":"tomcat","purl":"pkg:rpm/suse/tomcat\u0026distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5","source":"SUSE-SU-2022:4009-1"},{"ecosystem":"SUSE:Linux Enterprise Server for SAP Applications 12 SP5","fixed":["9.0.36-3.90.1"],"introduced":["0"],"last_affected":[],"package":"tomcat","purl":"pkg:rpm/suse/tomcat\u0026distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5","source":"SUSE-SU-2022:4009-1"}],"prev":{"headline":"Race condition in n/a","id":"CVE-2021-43979"},"products":["Apache Tomcat"],"published":"2022-09-28","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":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"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":"2025-05-21","vendors":["Apache Software Foundation"]},"summary":"A concurrency bug in Apache Tomcat allows attackers to receive responses intended for other clients, leading to information disclosure.","url":"https://insights.sbomify.com/CVE-2021-43980/"}