CVE-2026-24880— Apache Tomcat: Request smuggling via invalid chunk extension
Quick assessment
Affected
Apache Software Foundation Apache Tomcat
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Apache Tomcat是美国阿帕奇（Apache）基金会的一款轻量级Web应用服务器。用于实现对Servlet和JavaServer Page（JSP）的支持。 Apache Tomcat 11.0.18及之前版本、10.1.52及之前版本、9.0.115及之前版本、8.5.100及之前版本和7.0.109及之前版本存在环境问题漏洞，该漏洞源于HTTP请求解释不一致，可能导致HTTP请求夹带攻击。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-24880
Vulnerability Information
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Vulnerability Title
Apache Tomcat: Request smuggling via invalid chunk extension
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
HTTP请求的解释不一致性(HTTP请求私运)
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Tomcat 环境问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Tomcat是美国阿帕奇（Apache）基金会的一款轻量级Web应用服务器。用于实现对Servlet和JavaServer Page（JSP）的支持。 Apache Tomcat 11.0.18及之前版本、10.1.52及之前版本、9.0.115及之前版本、8.5.100及之前版本和7.0.109及之前版本存在环境问题漏洞，该漏洞源于HTTP请求解释不一致，可能导致HTTP请求夹带攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Apache Software Foundation | Apache Tomcat | 11.0.0-M1 ~ 11.0.18 | - |
|
II. Public POCs for CVE-2026-24880
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Apache Software Foundation · 2026-04-09 · 17 CVEs total
| CVE-2026-34500 | Apache Tomcat: OCSP checks sometimes soft-fail with FFM even when soft-fail is disabled | |
| CVE-2026-34487 | Apache Tomcat: Cloud membership for clustering component exposed the Kubernetes bearer tok | |
| CVE-2026-34486 | Apache Tomcat: Fix for CVE-2026-29146 allowed bypass of EncryptInterceptor | |
| CVE-2026-34483 | Apache Tomcat: Incomplete escaping of JSON access logs | |
| CVE-2026-32990 | Apache Tomcat: Fix for CVE-2025-66614 is incomplete | |
| CVE-2026-29146 | Apache Tomcat: EncryptInterceptor vulnerable to padding oracle attack by default | |
| CVE-2026-29145 | Apache Tomcat, Apache Tomcat Native: OCSP checks sometimes soft-fail even when soft-fail i | |
| CVE-2026-29129 | Apache Tomcat: TLS cipher order is not preserved | |
| CVE-2026-25854 | Apache Tomcat: Occasionally open redirect | |
| CVE-2026-40046 | Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ MQTT: Missing fix for CVE-2025-66168 | |
| CVE-2026-33005 | Apache OpenMeetings: Insufficient checks in FileWebService | |
| CVE-2026-33266 | Apache OpenMeetings: Hardcoded Remember-Me Cookie Encryption Key and Salt | |
| CVE-2026-34020 | Apache OpenMeetings: Login Credentials Passed via GET Query Parameters | |
| CVE-2025-57735 | Apache Airflow: Airflow Logout Not Invalidating JWT | |
| CVE-2025-62188 | Apache DolphinScheduler: Users can access sensitive information through the actuator endpo | |
| CVE-2026-34538 | Apache Airflow: Authorization bypass in DagRun wait endpoint (XCom exposure) |
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