HTTP Request/Response Smuggling Vulnerability in Apache Tomcat
CVE-2026-24880

7.5HIGH

Key Information:

Vendor

Apache
Status
Apache Tomcat
Vendor
CVE Published:
9 April 2026

What is CVE-2026-24880?

A vulnerability exists in Apache Tomcat that allows for inconsistent interpretation of HTTP requests, specifically through invalid chunk extensions. This can lead to potential security risks, enabling attackers to perform various forms of attacks by manipulating HTTP requests and responses. Affected users are strongly advised to update to secure versions to mitigate risk.

Affected Version(s)

Apache Tomcat 11.0.0-M1 <= 11.0.18

Apache Tomcat 10.1.0-M1 <= 10.1.52

Apache Tomcat 9.0.0.M1 <= 9.0.115

References

https://lists.apache.org/thread/2c682qnlg2tv4o5knlggqbl9y...
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Xclow3n
.