Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-55276— Apache Tomcat: Logged effective web.xml is incomplete

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Always-Incorrect Control Flow Implementation，导致记录有效web.xml时未包含特殊角色和空授权约束。以下版本受到影响：11.0.0-M1版本至11.0.22版本、10.1.0-M1版本至10.1.55版本、9.0.0.M1版本至9.0.118版本和8

AI Predicted 5.3 Difficulty: Trivial EPSS 0.61% · P47

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
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-55276

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Apache Tomcat: Logged effective web.xml is incomplete
Source: CVE Program / CVE List V5
Vulnerability Description
Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat meant that special roles and empty authorisation constraints were not included when the effective web.xml was logged. 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 fixes 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Always-Incorrect Control Flow Implementation，导致记录有效web.xml时未包含特殊角色和空授权约束。以下版本受到影响：11.0.0-M1版本至11.0.22版本、10.1.0-M1版本至10.1.55版本、9.0.0.M1版本至9.0.118版本和8
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-2026-55276

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-55276

请登录查看更多情报信息。

Mailing List Discussions for CVE-2026-55276 (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-2026-53434 Apache Tomcat: Invalid CRL configuration doesn't trigger failure for FFM Connector
CVE-2026-53404 Apache Tomcat: Bad ornext processing in RewriteValve
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-2026-55276

No comments yet

Leave a comment