Uncontrolled resource consumption in Apache Tomcat
Priority HIGH 71CWE-400Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Partial Red Hat: 5 fixed, 2 without a fix
Attack profile from CVSS 3.0 · NVD. Fix status from CNA, GitHub and Red Hat. Impact type from CWE-400.
Summary
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.
Why it matters now
EPSS 0.72855 99th percentileScored 2026-11-07
Fix Partial org.apache.tomcat.embed:tomcat-embed-core (Maven): 9.0.16, 8.5.38org.apache.tomcat:tomcat-coyote (Maven): 9.0.16, 8.5.38Red Hat: 3 advisoriesRed Hat: 5 fixed, 2 without a fix
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Apache Tomcat | Apache Tomcat 9.0.0.M1 to 9.0.14, 8.5.0 to 8.5.37 | — | No fix listed | CNA |
| — | org.apache.tomcat.embed:tomcat-embed-core (Maven) | 9.0.0 to before 9.0.16 | 9.0.16 | Patch available | GHSA-qcxh-w3j9-58qr |
| — | org.apache.tomcat.embed:tomcat-embed-core (Maven) | 8.0.0 to before 8.5.38 | 8.5.38 | Patch available | GHSA-qcxh-w3j9-58qr |
| — | org.apache.tomcat:tomcat-coyote (Maven) | 9.0.0 to before 9.0.16 | 9.0.16 | Patch available | GHSA-qcxh-w3j9-58qr |
| — | org.apache.tomcat:tomcat-coyote (Maven) | 8.0.0 to before 8.5.38 | 8.5.38 | Patch available | GHSA-qcxh-w3j9-58qr |
- Apache Tomcat Vendor— Affected Apache Tomcat 9.0.0.M1 to 9.0.14, 8.5.0 to 8.5.37 Fixed in — No fix listed CNA
- org.apache.tomcat.embed:tomcat-embed-core (Maven) Vendor— Affected 9.0.0 to before 9.0.16 Fixed in 9.0.16 Patch available GHSA-qcxh-w3j9-58qr
- org.apache.tomcat.embed:tomcat-embed-core (Maven) Vendor— Affected 8.0.0 to before 8.5.38 Fixed in 8.5.38 Patch available GHSA-qcxh-w3j9-58qr
- org.apache.tomcat:tomcat-coyote (Maven) Vendor— Affected 9.0.0 to before 9.0.16 Fixed in 9.0.16 Patch available GHSA-qcxh-w3j9-58qr
- org.apache.tomcat:tomcat-coyote (Maven) Vendor— Affected 8.0.0 to before 8.5.38 Fixed in 8.5.38 Patch available GHSA-qcxh-w3j9-58qr
CPE configurations NVD · 22
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* | 8.5.0 – 8.5.37; 9.0.1 – 9.0.14 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone1:*:*:*:*:*:* | 9.0.0 milestone1 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone10:*:*:*:*:*:* | 9.0.0 milestone10 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone11:*:*:*:*:*:* | 9.0.0 milestone11 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone12:*:*:*:*:*:* | 9.0.0 milestone12 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone13:*:*:*:*:*:* | 9.0.0 milestone13 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone14:*:*:*:*:*:* | 9.0.0 milestone14 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone15:*:*:*:*:*:* | 9.0.0 milestone15 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone16:*:*:*:*:*:* | 9.0.0 milestone16 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone17:*:*:*:*:*:* | 9.0.0 milestone17 | Vulnerable | Apache |
- cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* Versions 8.5.0 – 8.5.37; 9.0.1 – 9.0.14 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone1:*:*:*:*:*:* Versions 9.0.0 milestone1 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone10:*:*:*:*:*:* Versions 9.0.0 milestone10 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone11:*:*:*:*:*:* Versions 9.0.0 milestone11 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone12:*:*:*:*:*:* Versions 9.0.0 milestone12 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone13:*:*:*:*:*:* Versions 9.0.0 milestone13 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone14:*:*:*:*:*:* Versions 9.0.0 milestone14 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone15:*:*:*:*:*:* Versions 9.0.0 milestone15 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone16:*:*:*:*:*:* Versions 9.0.0 milestone16 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone17:*:*:*:*:*:* Versions 9.0.0 milestone17 Vulnerable ·Apache
Show 12 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:apache:tomcat:9.0.0:milestone18:*:*:*:*:*:* | 9.0.0 milestone18 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone19:*:*:*:*:*:* | 9.0.0 milestone19 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone2:*:*:*:*:*:* | 9.0.0 milestone2 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone20:*:*:*:*:*:* | 9.0.0 milestone20 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone21:*:*:*:*:*:* | 9.0.0 milestone21 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone3:*:*:*:*:*:* | 9.0.0 milestone3 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone4:*:*:*:*:*:* | 9.0.0 milestone4 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone5:*:*:*:*:*:* | 9.0.0 milestone5 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone6:*:*:*:*:*:* | 9.0.0 milestone6 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone7:*:*:*:*:*:* | 9.0.0 milestone7 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone8:*:*:*:*:*:* | 9.0.0 milestone8 | Vulnerable | Apache |
| cpe:2.3:a:apache:tomcat:9.0.0:milestone9:*:*:*:*:*:* | 9.0.0 milestone9 | Vulnerable | Apache |
- cpe:2.3:a:apache:tomcat:9.0.0:milestone18:*:*:*:*:*:* Versions 9.0.0 milestone18 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone19:*:*:*:*:*:* Versions 9.0.0 milestone19 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone2:*:*:*:*:*:* Versions 9.0.0 milestone2 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone20:*:*:*:*:*:* Versions 9.0.0 milestone20 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone21:*:*:*:*:*:* Versions 9.0.0 milestone21 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone3:*:*:*:*:*:* Versions 9.0.0 milestone3 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone4:*:*:*:*:*:* Versions 9.0.0 milestone4 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone5:*:*:*:*:*:* Versions 9.0.0 milestone5 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone6:*:*:*:*:*:* Versions 9.0.0 milestone6 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone7:*:*:*:*:*:* Versions 9.0.0 milestone7 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone8:*:*:*:*:*:* Versions 9.0.0 milestone8 Vulnerable ·Apache
- cpe:2.3:a:apache:tomcat:9.0.0:milestone9:*:*:*:*:*:* Versions 9.0.0 milestone9 Vulnerable ·Apache
Remediation
- Fix · GHSA-qcxh-w3j9-58qr org.apache.tomcat.embed:tomcat-embed-core (Maven) Fixed in 9.0.16 Advisory →
- Fix · GHSA-qcxh-w3j9-58qr org.apache.tomcat.embed:tomcat-embed-core (Maven) Fixed in 8.5.38 Advisory →
- Fix · GHSA-qcxh-w3j9-58qr org.apache.tomcat:tomcat-coyote (Maven) Fixed in 9.0.16 Advisory →
- Fix · GHSA-qcxh-w3j9-58qr org.apache.tomcat:tomcat-coyote (Maven) Fixed in 8.5.38 Advisory →
Red Hat 3 advisories
- RHSA-2020:2366 Released 2020-06-04 · Red Hat rating ImportantRed Hat support for Spring Boot 2.1.12 security and bug fix update
- Red Hat Runtimes Spring Boot 2.1.12
- RHSA-2019:3929 Released 2019-11-20 · Red Hat rating ImportantRed Hat JBoss Web Server 5.2 security release
- Red Hat JBoss Web Server 5.2 for RHEL 6 Server jws5-ecj-4.12.0-1.redhat_1.1.el6jws, jws5-javapackages-tools-3.4.1-5.15.11.el6jws, jws5-jboss-logging-3.3.2-1.Final_redhat_00001.1.el6jws +16
- Red Hat JBoss Web Server 5.2 for RHEL 7 Server jws5-ecj-4.12.0-1.redhat_1.1.el7jws, jws5-javapackages-tools-3.4.1-5.15.11.el7jws, jws5-jboss-logging-3.3.2-1.Final_redhat_00001.1.el7jws +16
- Red Hat JBoss Web Server 5.2 for RHEL 8 jws5-ecj-4.12.0-1.redhat_1.1.el8jws, jws5-javapackages-tools-3.4.1-5.15.11.el8jws, jws5-jboss-logging-3.3.2-1.Final_redhat_00001.1.el8jws +16
- RHSA-2019:3931 Released 2019-11-20 · Red Hat rating ImportantRed Hat JBoss Web Server 5.2 security release
- Red Hat JBoss Web Server 5
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 8 | Affected | No fix planned: Will not fix |
| Red Hat support for Spring Boot | Affected | No fix yet |
| Red Hat JBoss Web Server 5 | Fixed | RHSA-2019:3931 |
| Red Hat JBoss Web Server 5.2 for RHEL 6 Server | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 for RHEL 7 Server | Fixed | RHSA-2019:3929 |
| Red Hat JBoss Web Server 5.2 for RHEL 8 | Fixed | RHSA-2019:3929 |
| Red Hat Runtimes Spring Boot 2.1.12 | Fixed | RHSA-2020:2366 |
Not affected: 19 products
- Red Hat BPM Suite 6
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Fuse 7
- Red Hat JBoss BRMS 5
- Red Hat JBoss BRMS 6
- Red Hat JBoss Data Grid 6
- Red Hat JBoss Data Grid 7
- Red Hat JBoss Data Virtualization 6
- Red Hat JBoss Enterprise Application Platform 5
- Red Hat JBoss Enterprise Application Platform 6
- Red Hat JBoss Enterprise Web Server 2
- Red Hat JBoss Fuse 6
- Red Hat JBoss Fuse Service Works 6
- Red Hat JBoss Operations Network 3
- Red Hat JBoss SOA Platform 5
- Red Hat JBoss Web Server 3
- Red Hat OpenShift Application Runtimes
- Red Hat Software Collections
Timeline
- 2026-10-02 Threatist record created from CVE-2019-0199
- 2026-10-03 Alias added: GHSA-qcxh-w3j9-58qr
References
Advisory 10
Other 52
- https://lists.apache.org/thread.html/e1b0b273b6e8ddcc72c9023bc2394b1276fc72664144bf21d0a87995%40%3Cannounce.tomcat.apache.org%3E
- [tomcat-dev] 20190413 svn commit: r1857494 [17/20] - in /tomcat/site/trunk: ./ docs/ xdocs/
- [tomcat-dev] 20190413 svn commit: r1857496 [3/4] - in /tomcat/site/trunk: ./ docs/ xdocs/
- [tomcat-dev] 20190415 svn commit: r1857582 [18/22] - in /tomcat/site/trunk: docs/ xdocs/stylesheets/
- [tomcat-dev] 20190415 svn commit: r1857582 [19/22] - in /tomcat/site/trunk: docs/ xdocs/stylesheets/
- [tomee-commits] 20190528 [jira] [Closed] (TOMEE-2497) Upgrade Tomcat in TomEE 7.0.x/7.1.x/8.0.x for CVE-2019-0199
- [tomcat-users] 20190620 Re: [EXTERNAL] [SECURITY] CVE-2019-10072 Apache Tomcat HTTP/2 DoS
- [tomcat-dev] 20190620 [SECURITY] CVE-2019-10072 Apache Tomcat HTTP/2 DoS
- [announce] 20190620 [SECURITY] CVE-2019-10072 Apache Tomcat HTTP/2 DoS
- [tomcat-announce] 20190620 [SECURITY] CVE-2019-10072 Apache Tomcat HTTP/2 DoS
- [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
- [tomcat-users] 20190620 [SECURITY] CVE-2019-10072 Apache Tomcat HTTP/2 DoS
- [tomcat-dev] 20190620 [SECURITY][CORRECTION] CVE-2019-10072 Apache Tomcat HTTP/2 DoS
- [tomcat-announce] 20190620 [SECURITY][CORRECTION] CVE-2019-10072 Apache Tomcat HTTP/2 DoS
- [tomcat-users] 20190620 [SECURITY][CORRECTION] CVE-2019-10072 Apache Tomcat HTTP/2 DoS
- [announce] 20190620 [SECURITY][CORRECTION] CVE-2019-10072 Apache Tomcat HTTP/2 DoS
- https://support.f5.com/csp/article/K17321505
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
- 20191229 [SECURITY] [DSA 4596-1] tomcat8 security update
- https://www.oracle.com/security-alerts/cpujan2020.html
- [tomcat-dev] 20200203 svn commit: r1873527 [24/30] - /tomcat/site/trunk/docs/
- [tomcat-dev] 20200203 svn commit: r1873527 [25/30] - /tomcat/site/trunk/docs/
- [tomcat-dev] 20200213 svn commit: r1873980 [28/34] - /tomcat/site/trunk/docs/
- [tomcat-dev] 20200213 svn commit: r1873980 [29/34] - /tomcat/site/trunk/docs/
- https://www.oracle.com/security-alerts/cpuapr2020.html
- https://lists.apache.org/thread.html/e1b0b273b6e8ddcc72c9023bc2394b1276fc72664144bf21d0a87995@%3Cannounce.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/e56886e1bac9319ecce81b3612dd7a1a43174a3a741a1c805e16880e@%3Ccommits.tomee.apache.org%3E
- https://lists.apache.org/thread.html/e85e83e9954f169bbb77b44baae5a33d8de878df557bb32b7f793661@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/e87733036e8c84ea648cdcdca3098f3c8a897e2652c33062b2b1535c@%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r3bbb800a816d0a51eccc5a228c58736960a9fffafa581a225834d97d@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r48c1444845fe15a823e1374674bfc297d5008a5453788099ea14caf0@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r6ccee4e849bc77df0840c7f853f6bd09d426f6741247da2b7429d5d9@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/raba0fabaf4d56d4325ab2aca8814f0b30a237ab83d8106b115ee279a@%3Cdev.tomcat.apache.org%3E
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NPHQEL5AQ6LZSZD2Y6TYZ4RC3WI7NXJ3
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZQTZ5BJ5F4KV6N53SGNKSW3UY5DBIQ46
- https://lists.fedoraproject.org/archives/list/[email protected]/message/NPHQEL5AQ6LZSZD2Y6TYZ4RC3WI7NXJ3
- https://lists.fedoraproject.org/archives/list/[email protected]/message/ZQTZ5BJ5F4KV6N53SGNKSW3UY5DBIQ46
- https://security.netapp.com/advisory/ntap-20190419-0001
- https://web.archive.org/web/20200227030041/http://www.securityfocus.com/bid/107674
- https://github.com/apache/tomcat
- https://lists.apache.org/thread.html/158ab719cf60448ddbb074798f09152fdb572fc8f781e70a56118d1a@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/1dd0a59c1295cc08ce4c9e7edae5ad2268acc9ba55adcefa0532e5ba@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/4c438fa4c78cb1ce8979077f668ab7145baf83e7c59f2faf7eccf094@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/6af47120905aa7d8fe12f42e8ff2284fb338ba141d3b77b8c7cb61b3@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/7bb193bc68b28d21ff1c726fd38bea164deb6333b59eec2eb3661da6@%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/88855876c33f2f9c532ffb75bfee570ccf0b17ffa77493745af9a17a@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/9fe25f98bac6d66f8a663a15c37a98bc2d8f8bbed1d408791a3e4067@%3Cusers.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/a7a201bd23e67fd3326c9b22b814dd0537d3270b3b54a768e2e7ef50@%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/ac0185ce240a711b542a55bccf9349ab0c2f343d70cf7835e08fabc9@%3Cannounce.apache.org%3E
- https://lists.apache.org/thread.html/cf4eb2bd2083cebb3602a293c653f9a7faa96c86f672c876f25b37ef@%3Cannounce.apache.org%3E
- https://lists.apache.org/thread.html/dddb3590bac28fbe89f69f5ccbe26283d014ddc691abdd042de14600@%3Cannounce.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/df1a2c1b87c8a6c500ecdbbaf134c7f1491c8d79d98b48c6b9f0fa6a@%3Cannounce.tomcat.apache.org%3E
More Apache Tomcat vulnerabilities
- TI-2025-18529 Apache Tomcat: Potential RCE and/or information disclosure and/or information corruption with partial PUT KEVCVSS 3.1CRITICAL 10.0
- TI-2020-01862 Improper privilege management in Apache Tomcat KEVCVSS 3.1CRITICAL 9.8
- TI-2016-07192 Improper access control in Apache Tomcat KEVCVSS 3.1CRITICAL 9.8
- TI-2017-09342 Unrestricted file upload in Apache Tomcat KEVCVSS 3.1HIGH 8.1
- TI-2017-09340 Unrestricted file upload in Apache Tomcat KEVCVSS 3.1HIGH 8.1
- TI-2026-26741 Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor KEVCVSS 3.1HIGH 7.5
Sources
- CVE-2019-0199 · CVE Program
- CVE-2019-0199 · NVD
- FIRST EPSS
- GHSA-qcxh-w3j9-58qr · GitHub Advisory Database · CC BY 4.0
- CVE-2019-0199 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences