Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Apache Tomcat via invalid chunk extension.
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.18, from 10.1.0-M1 through 10.1.52, from 9.0.0.M1 through 9.0.115, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109. Other, unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.20, 10.1.52 or 9.0.116, which fix the issue.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Amazon Linux Ami 2 | — | Upgrade tomcat-jsvcUpgrade tomcat-libUpgrade tomcat-servlet-4.0-apiUpgrade tomcat-el-3.0-apiUpgrade tomcat-admin-webappsUpgrade tomcatUpgrade tomcat-jsp-2.3-apiUpgrade tomcat-webappsUpgrade tomcat-docs-webapp | May 20, 2026 | May 20, 2026 |
| Apache Tomcat | — | Upgrade Apache Tomcat to 10.1.53Upgrade Apache Tomcat to 11.0.20Upgrade Apache Tomcat to 9.0.116Upgrade Apache Tomcat to the latest available version | Apr 10, 2026 | Apr 9, 2026 |
| Debian | — | Upgrade tomcat10Upgrade tomcat11Upgrade tomcat9 | Apr 13, 2026 | Apr 13, 2026 |
| Redhat_linux | — | Upgrade tomcat9-servlet-4.0-apiUpgrade jws6-tomcat-javadocUpgrade jws6-tomcat-selinuxUpgrade jws6-tomcat-servlet-6.0-apiUpgrade jws6-tomcat-admin-webappsUpgrade tomcat-libUpgrade tomcat9-webappsUpgrade jws6-tomcat-jsp-3.1-apiUpgrade tomcat9Upgrade tomcat-webappsNo solution existsUpgrade jws6-tomcat-el-5.0-apiUpgrade tomcat9-libUpgrade tomcat9-docs-webappUpgrade tomcat-docs-webappUpgrade jws6-tomcatUpgrade tomcat9-el-3.0-apiUpgrade tomcat-admin-webappsUpgrade jws6-tomcat-libUpgrade tomcat-servlet-4.0-apiUpgrade jws6-tomcat-webappsUpgrade tomcatUpgrade jws6-tomcat-docs-webappUpgrade tomcat9-jsp-2.3-apiUpgrade tomcat-el-3.0-apiUpgrade tomcat-jsp-2.3-apiUpgrade tomcat9-admin-webapps | May 28, 2026 | Apr 9, 2026 |
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