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CVE-2026-53404— Apache Tomcat: Bad ornext processing in RewriteValve

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 Software Foundation Apache Tomcat是Apache Software Foundation基金会的应用服务器。 Apache Tomcat存在处理逻辑错误漏洞，该漏洞源于rewrite阀中控制流实现始终不正确，导致如果OR链中的第一个条件匹配，后续的非OR条件被跳过。以下版本受到影响：11.0.0-M1至11.0.22版本、10.1.0-M1至10.1.55版本、9.0.0.M1至9.0.118版本和8.5.0至8.5.100版本。

AI Predicted 7.5 Difficulty: Moderate EPSS 0.65% · P50

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 5

VendorProduct Version RangeStatus
Apache Software Foundation Apache Tomcat 11.0.0-M1≤ 11.0.22 affected
10.1.0-M1≤ 10.1.55 affected
9.0.0.M1≤ 9.0.118 affected
8.5.0≤ 8.5.100 affected
< 8.0.0 unaffected
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I. Basic Information for CVE-2026-53404

Vulnerability Information
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Vulnerability Title
Apache Tomcat: Bad ornext processing in RewriteValve
Source: CVE Program / CVE List V5
Vulnerability Description
Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat's rewrite valve meant that if the first condition in an OR chain matched, subsequent non-OR conditions were skipped. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
控制流实现总是不正确
Source: CVE Program / CVE List V5
Vulnerability Title
Apache Tomcat 处理逻辑错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Apache Software Foundation Apache Tomcat是Apache Software Foundation基金会的应用服务器。 Apache Tomcat存在处理逻辑错误漏洞，该漏洞源于rewrite阀中控制流实现始终不正确，导致如果OR链中的第一个条件匹配，后续的非OR条件被跳过。以下版本受到影响：11.0.0-M1至11.0.22版本、10.1.0-M1至10.1.55版本、9.0.0.M1至9.0.118版本和8.5.0至8.5.100版本。
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 ~ 11.0.22 -

II. Public POCs for CVE-2026-53404

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III. Intelligence Information for CVE-2026-53404

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Mailing List Discussions for CVE-2026-53404 (1)

Same Patch Batch · Apache Software Foundation · 2026-06-29 · 7 CVEs total

CVE-2026-55957 Apache Tomcat: Authentication bypass with JNDIRealm and GSSAPI authenticated bind
CVE-2026-55956 Apache Tomcat: Security constraints for default servlet ignored method
CVE-2026-55955 Apache Tomcat: EncryptInterceptor not protected against replay attacks
CVE-2026-55276 Apache Tomcat: Logged effective web.xml is incomplete
CVE-2026-53434 Apache Tomcat: Invalid CRL configuration doesn't trigger failure for FFM Connector
CVE-2026-50229 Apache Tomcat: XSS in number guess example

IV. Related Vulnerabilities

Same product: Apache Tomcat
Same vendor: Apache Software Foundation
Same weakness: CWE-670

V. Comments for CVE-2026-53404

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