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Apache Tomcat has an HTTP Request/Response Smuggling vulnerability

🗓️ 09 Apr 2026 21:31:29Reported by GitHub Advisory DatabaseType 
github
 github🔗 github.com👁 7 Views

Tomcat vulnerable to request smuggling via invalid chunk extension; upgrade to fixed versions.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
IBM Security Bulletins		Security Bulletin: Multiple Vulnerabilities in IBM DataStax Enterprise
27 May 202617:14
–ibm
IBM Security Bulletins		Security Bulletin: IBM Watson Discovery Cartridge affected by vulnerability in tomcat-embed-core-11.0.18.jar
13 May 202616:45
–ibm
IBM Security Bulletins		Security Bulletin: IBM Integration Bus for z/OS is vulnerable to multiple vulnerabilities due to Apache Tomcat
14 May 202614:09
–ibm
IBM Security Bulletins		Security Bulletin: Vulnerabilities in Apache Tomcat and Lodash might affect IBM Storage Defender Copy Data Management
4 May 202616:20
–ibm
ATTACKERKB		CVE-2026-24880
9 Apr 202619:12
–attackerkb
Tenable Nessus		Amazon Linux 2023 : tomcat9, tomcat9-admin-webapps, tomcat9-el-3.0-api (ALAS2023-2026-1672)
20 May 202600:00
–nessus
Tenable Nessus		Amazon Linux 2023 : tomcat10, tomcat10-admin-webapps, tomcat10-el-5.0-api (ALAS2023-2026-1673)
20 May 202600:00
–nessus
Tenable Nessus		Amazon Linux 2 : tomcat, --advisory ALAS2TOMCAT9-2026-025 (ALASTOMCAT9-2026-025)
30 Apr 202600:00
–nessus
Tenable Nessus		Atlassian Bamboo 9.6.x < 9.6.25 / 10.x < 10.2.18 / 11.x < 12.1.6 Multiple Vulnerabilities
1 May 202600:00
–nessus
Tenable Nessus		Atlassian Confluence 8.9.0 < 9.2.20 / 9.3.1 < 10.2.11 (CONFSERVER-103707)
26 May 202600:00
–nessus
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Vulners
Node
org.apache.tomcat.embedtomcat-embed-coreRange11.0.0-M1–11.0.18maven
OR
org.apache.tomcat.embedtomcat-embed-coreRange10.1.0-M1–10.1.52maven
OR
org.apache.tomcat.embedtomcat-embed-coreRange7.0.0–9.0.116maven
OR
org.apache.tomcattomcat-coyoteRange11.0.0-M1–11.0.18maven
OR
org.apache.tomcattomcat-coyoteRange10.1.0-M1–10.1.52maven
OR
org.apache.tomcattomcat-coyoteRange7.0.0–9.0.116maven

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20 May 2026 21:54Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.17.5
EPSS0.00176
SSVC
CWE-444
Tomcat vulnerabilityrequest smugglingchunk extensionaffected versionsfixed versionsupgrade recommended
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