CVE-2019-17569

The refactoring present in Apache Tomcat 9.0.28 to 9.0.30, 8.5.48 to 8.5.50 and 7.0.98 to 7.0.99 introduced a regression. The result of the regression was that invalid Transfer-Encoding headers were incorrectly processed leading 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.

• CWE-444

• http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.htmlMailing List, Third Party Advisory
• https://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78%40%3Ccommits.tomee.apache.org%3E
• https://lists.apache.org/thread.html/r88def002c5c78534674ca67472e035099fbe088813d50062094a1390%40%3Cannounce.tomcat.apache.org%3EMailing List, Vendor Advisory
• https://lists.apache.org/thread.html/rc31cbabb46cdc58bbdd8519a8f64b6236b2635a3922bbeba0f0e3743%40%3Ccommits.tomee.apache.org%3E
• https://lists.debian.org/debian-lts-announce/2020/03/msg00006.htmlMailing List, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20200327-0005/Third Party Advisory
• https://www.debian.org/security/2020/dsa-4673Third Party Advisory
• https://www.debian.org/security/2020/dsa-4680Third Party Advisory
• https://www.oracle.com/security-alerts/cpujan2021.htmlPatch, Third Party Advisory
• https://www.oracle.com/security-alerts/cpujul2020.htmlPatch, Third Party Advisory
• https://www.oracle.com/security-alerts/cpuoct2020.htmlPatch, Third Party Advisory
• http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.htmlMailing List, Third Party Advisory
• https://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78%40%3Ccommits.tomee.apache.org%3E
• https://lists.apache.org/thread.html/r88def002c5c78534674ca67472e035099fbe088813d50062094a1390%40%3Cannounce.tomcat.apache.org%3EMailing List, Vendor Advisory
• https://lists.apache.org/thread.html/rc31cbabb46cdc58bbdd8519a8f64b6236b2635a3922bbeba0f0e3743%40%3Ccommits.tomee.apache.org%3E
• https://lists.debian.org/debian-lts-announce/2020/03/msg00006.htmlMailing List, Third Party Advisory
• https://security.netapp.com/advisory/ntap-20200327-0005/Third Party Advisory
• https://www.debian.org/security/2020/dsa-4673Third Party Advisory
• https://www.debian.org/security/2020/dsa-4680Third Party Advisory
• https://www.oracle.com/security-alerts/cpujan2021.htmlPatch, Third Party Advisory
• https://www.oracle.com/security-alerts/cpujul2020.htmlPatch, Third Party Advisory
• https://www.oracle.com/security-alerts/cpuoct2020.htmlPatch, Third Party Advisory

Published

Feb 24, 2020

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2019-17563When using FORM authentication with Apache Tomcat 9.0.0.M1 t…7.5
• CVE-2019-17564Unsafe deserialization occurs within a Dubbo application whi…9.8
• CVE-2019-17565There is a vulnerability in Apache Traffic Server 6.0.0 to 6…9.8
• CVE-2019-17566Apache Batik is vulnerable to server-side request forgery, c…7.5
• CVE-2019-17567Apache HTTP Server versions 2.4.6 to 2.4.46 mod_proxy_wstunn…5.3
• CVE-2019-17568Rejected reason: DO NOT USE THIS CANDIDATE NUMBER. ConsultID…
• CVE-2019-1757A vulnerability in the Cisco Smart Call Home feature of Cisc…5.9
• CVE-2019-17570An untrusted deserialization was found in the org.apache.xml…9.8
• CVE-2019-17571Included in Log4j 1.2 is a SocketServer class that is vulner…9.8
• CVE-2019-17572In Apache RocketMQ 4.2.0 to 4.6.0, when the automatic topic …5.3
• CVE-2019-17573By default, Apache CXF creates a /services page containing a…6.1
• CVE-2019-17574An issue was discovered in the Popup Maker plugin before 1.8…9.1