CVE-2019-0199
Description
The HTTP/2 implementation in Apache Tomcat 9.0.0.M1 to 9.0.14 and 8.5.0 to 8.5.37 accepted streams with excessive numbers of SETTINGS frames and also permitted clients to keep streams open without reading/writing request/response data. By keeping streams open for requests that utilised the Servlet API's blocking I/O, clients were able to cause server-side threads to block eventually leading to thread exhaustion and a DoS.
Official description from the CVE record, published by apache. Copyright © 1999-2026 The MITRE Corporation. See /security/cve/legal for the CVE license. View the record on cve.org
Key data
EPSS
- Score
- 0.72855 (72.9% probability)
- Percentile
- 99.5%
- Scores of
- Nov 10, 2026
- Model
- v2026.06.15
Affected products
Apache Tomcat
- affected: Apache Tomcat 9.0.0.M1 to 9.0.14, 8.5.0 to 8.5.37
References
- lists.apache.org/thread.html/e1b0b273b6e8ddcc72c9023bc2394b…
- [tomcat-dev] 20190413 svn commit: r1857494 [17/20] - in /tomcat/site/trunk: ./ docs/ xdocs/ (lists.apache.org)mailing-list
- [tomcat-dev] 20190413 svn commit: r1857496 [3/4] - in /tomcat/site/trunk: ./ docs/ xdocs/ (lists.apache.org)mailing-list
- [tomcat-dev] 20190415 svn commit: r1857582 [18/22] - in /tomcat/site/trunk: docs/ xdocs/stylesheets/ (lists.apache.org)mailing-list
- [tomcat-dev] 20190415 svn commit: r1857582 [19/22] - in /tomcat/site/trunk: docs/ xdocs/stylesheets/ (lists.apache.org)mailing-list
- security.netapp.com/advisory/ntap-20190419-0001
- [tomee-commits] 20190528 [jira] [Closed] (TOMEE-2497) Upgrade Tomcat in TomEE 7.0.x/7.1.x/8.0.x for CVE-2019-0199 (lists.apache.org)mailing-list
- [tomcat-users] 20190620 Re: [EXTERNAL] [SECURITY] CVE-2019-10072 Apache Tomcat HTTP/2 DoS (lists.apache.org)mailing-list
- [tomcat-dev] 20190620 [SECURITY] CVE-2019-10072 Apache Tomcat HTTP/2 DoS (lists.apache.org)mailing-list
- [announce] 20190620 [SECURITY] CVE-2019-10072 Apache Tomcat HTTP/2 DoS (lists.apache.org)mailing-list
- [tomcat-announce] 20190620 [SECURITY] CVE-2019-10072 Apache Tomcat HTTP/2 DoS (lists.apache.org)mailing-list
- [tomcat-dev] 20190620 svn commit: r1861711 - in /tomcat/site/trunk: docs/security-8.html docs/security-9.html xdocs/security-8.xml xdocs/security-9.xml (lists.apache.org)mailing-list
- [tomcat-users] 20190620 [SECURITY] CVE-2019-10072 Apache Tomcat HTTP/2 DoS (lists.apache.org)mailing-list
- [tomcat-dev] 20190620 [SECURITY][CORRECTION] CVE-2019-10072 Apache Tomcat HTTP/2 DoS (lists.apache.org)mailing-list
- [tomcat-announce] 20190620 [SECURITY][CORRECTION] CVE-2019-10072 Apache Tomcat HTTP/2 DoS (lists.apache.org)mailing-list
- [tomcat-users] 20190620 [SECURITY][CORRECTION] CVE-2019-10072 Apache Tomcat HTTP/2 DoS (lists.apache.org)mailing-list
- [announce] 20190620 [SECURITY][CORRECTION] CVE-2019-10072 Apache Tomcat HTTP/2 DoS (lists.apache.org)mailing-list
- FEDORA-2019-1a3f878d27 (lists.fedoraproject.org)vendor-advisory
- support.f5.com/csp/article/K17321505
- openSUSE-SU-2019:1673 (lists.opensuse.org)vendor-advisory
- FEDORA-2019-d66febb5df (lists.fedoraproject.org)vendor-advisory
- oracle.com/technetwork/security-advisory/cpujul2019-5072835…
- 107674 (securityfocus.com)vdb-entry
- openSUSE-SU-2019:1723 (lists.opensuse.org)vendor-advisory
- openSUSE-SU-2019:1808 (lists.opensuse.org)vendor-advisory
- RHSA-2019:3929 (access.redhat.com)vendor-advisory
- RHSA-2019:3931 (access.redhat.com)vendor-advisory
- DSA-4596 (debian.org)vendor-advisory
- 20191229 [SECURITY] [DSA 4596-1] tomcat8 security update (seclists.org)mailing-list
- oracle.com/security-alerts/cpujan2020.html
- [tomcat-dev] 20200203 svn commit: r1873527 [24/30] - /tomcat/site/trunk/docs/ (lists.apache.org)mailing-list
- [tomcat-dev] 20200203 svn commit: r1873527 [25/30] - /tomcat/site/trunk/docs/ (lists.apache.org)mailing-list
- [tomcat-dev] 20200213 svn commit: r1873980 [28/34] - /tomcat/site/trunk/docs/ (lists.apache.org)mailing-list
- [tomcat-dev] 20200213 svn commit: r1873980 [29/34] - /tomcat/site/trunk/docs/ (lists.apache.org)mailing-list
- oracle.com/security-alerts/cpuapr2020.html
Timeline
- ID reserved
- Record published
- Record last updated
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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:48 UTC. Sources and licenses