CVE-2026-24880

HIGH

Apache Tomcat: Request smuggling via invalid chunk extension

Title source: cna
STIX 2.1

Description

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.

References (2)

Core 2

Scores

CVSS v3 7.5
EPSS 0.0045
EPSS Percentile 35.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-444
Status published
Products (17)
apache/tomcat 9.0.0 - 9.0.116
Apache Software Foundation/Apache Tomcat < 7.0.0
Apache Software Foundation/Apache Tomcat 10.1.0-M1 - 10.1.52
Apache Software Foundation/Apache Tomcat 11.0.0-M1 - 11.0.18
Apache Software Foundation/Apache Tomcat 7.0.0 - 7.0.109
Apache Software Foundation/Apache Tomcat 8.0.0-RC1 - 8.0.53
Apache Software Foundation/Apache Tomcat 8.5.0 - 8.5.100
Apache Software Foundation/Apache Tomcat 9.0.0.M1 - 9.0.115
org.apache.tomcat/tomcat 7.0.0 - 9.0.116Maven
org.apache.tomcat/tomcat-catalina 7.0.0 - 9.0.116Maven
... and 7 more
Published Apr 09, 2026
Tracked Since Apr 10, 2026