CVE-2026-25854— Apache Tomcat: Occasionally open redirect
Quick assessment
Affected
Apache Software Foundation Apache Tomcat
Exploitation
Public or AI PoC available; prioritize validation
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及之前版本和8.5.100及之前版本存在输入验证错误漏洞，该漏洞源于LoadBalancerDrainingValve存在偶尔的URL重定向问题，可能导致开放重定向攻击。
Possible ATT&CK Techniques 1 AI
T1566.001 · Spearphishing Attachment
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I. Basic Information for CVE-2026-25854
Vulnerability Information
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Vulnerability Title
Apache Tomcat: Occasionally open redirect
Source: CVE Program / CVE List V5
Vulnerability Description
Occasional URL redirection to untrusted Site ('Open Redirect') vulnerability in Apache Tomcat via the LoadBalancerDrainingValve.
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.M23 through 9.0.115, from 8.5.30 through 8.5.100.
Other, unsupported versions may also be affected
Users are recommended to upgrade to version 11.0.20, 10.1.53 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
指向未可信站点的URL重定向(开放重定向)
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Tomcat 输入验证错误漏洞
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及之前版本和8.5.100及之前版本存在输入验证错误漏洞，该漏洞源于LoadBalancerDrainingValve存在偶尔的URL重定向问题，可能导致开放重定向攻击。
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-2026-25854
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | Released by original Author | https://github.com/gregk4sec/CVE-2026-25854 | POC Details |
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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-2026-24880 | Apache Tomcat: Request smuggling via invalid chunk extension | |
| 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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V. Comments for CVE-2026-25854
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