Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: CVE-2026-59084: Insufficient Technical Documentation vulnerability in Apache Tomcat since the requirements to securely configure the EncryptInterceptor were not clearly documented. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.23, from 10.1.0-M1 through 10.1.56, from 9.0.13 through 9.0.119, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109. Other versions that have reached end of support may also be affected. Users are recommended to upgrade to version 11.0.24, 10.1.57 or 9.0.120 which fix the issue. CVE-2026-59083: Improper Handling of URL Encoding (Hex Encoding) vulnerability in Apache Tomcat's rewrite valve allowed security constraint bypass for some configurations. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.23, from 10.1.0-M1 through 10.1.56, from 9.0.0.M1 through 9.0.119, 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 11.0.24, 10.1.57 or 9.0.120, which fix the issue. CVE-2026-55956: Improper Authorization vulnerability in Apache Tomcat leads to security constraints specified for the default servlet ignoring any method or method omission configured as part of the constraint. 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, from 7.0.0 through 7.0.109. 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. CVE-2026-55955: Improper Authentication vulnerability in Apache Tomcat allowed a replay attack against the EncryptionInterceptor in the cluster component. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.13 through 9.0.18, from 8.5.38 through 8.5.100, from 7.0.100 through 7.0.109. Users are recommended to upgrade to version 11.0.23, 10.1.56, 9.0.119, which fixes the issue. CVE-2026-55276: 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. CVE-2026-53434: Detection of Error Condition Without Action vulnerability in Apache Tomcat when configuring CRLs for a FFM based connector. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M7 through 10.1.55, from 9.0.83 through 9.0.118. Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fixes the issue. CVE-2026-53404: 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. CVE-2026-50229: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in the number guess example for Apache Tomcat. 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, from 7.0.0 through 7.0.109. 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.
Fixed packages 8
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | tomcat10 | 1:10.1.57-1.amzn2023.0.1 |
| Amazon Linux · 2023 | tomcat10-admin-webapps | 1:10.1.57-1.amzn2023.0.1 |
| Amazon Linux · 2023 | tomcat10-docs-webapp | 1:10.1.57-1.amzn2023.0.1 |
| Amazon Linux · 2023 | tomcat10-el-5.0-api | 1:10.1.57-1.amzn2023.0.1 |
| Amazon Linux · 2023 | tomcat10-jsp-3.1-api | 1:10.1.57-1.amzn2023.0.1 |
| Amazon Linux · 2023 | tomcat10-lib | 1:10.1.57-1.amzn2023.0.1 |
| Amazon Linux · 2023 | tomcat10-servlet-6.0-api | 1:10.1.57-1.amzn2023.0.1 |
| Amazon Linux · 2023 | tomcat10-webapps | 1:10.1.57-1.amzn2023.0.1 |
Vulnerabilities 8
-
Critical 9.1
Apache Tomcat: Invalid CRL configuration doesn't trigger failure for FFM Connector
Detection of Error Condition Without Action vulnerability in Apache Tomcat when configuring CRLs for a FFM based connector. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M7 through 10.1.55, from 9.0.83 through 9.0.118. Users ar…
-
Critical 9.1
Apache Tomcat: Logged effective web.xml is incomplete
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,…
-
Critical 9.1
Apache Tomcat: Incorrect URL decoding in RewriteValve may allow security control bypass
Improper Handling of URL Encoding (Hex Encoding) vulnerability in Apache Tomcat's rewrite valve allowed security constraint bypass for some configurations. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.23, from 10.1.0-M1 through 10.1.56, from …
-
Critical 9.1
Apache Tomcat: EncryptInterceptor requirements not clearly documented
Insufficient Technical Documentation vulnerability in Apache Tomcat since the requirements to securely configure the EncryptInterceptor were not clearly documented. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.23, from 10.1.0-M1 through 10.1.…
-
High 7.3
Apache Tomcat: Bad ornext processing in RewriteValve
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, …
-
Medium 6.5
Apache Tomcat: EncryptInterceptor not protected against replay attacks
Improper Authentication vulnerability in Apache Tomcat allowed a replay attack against the EncryptionInterceptor in the cluster component. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.13 through 9.…
-
Medium 6.5
Apache Tomcat: Security constraints for default servlet ignored method
Improper Authorization vulnerability in Apache Tomcat leads to security constraints specified for the default servlet ignoring any method or method omission configured as part of the constraint. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22…
-
Medium 6.1
Apache Tomcat: XSS in number guess example
Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in the number guess example for Apache Tomcat. 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 …
References
-
web
https://alas.aws.amazon.com/cve/html/CVE-2026-50229.html
-
web
https://alas.aws.amazon.com/cve/html/CVE-2026-53404.html
-
web
https://alas.aws.amazon.com/cve/html/CVE-2026-53434.html
-
web
https://alas.aws.amazon.com/cve/html/CVE-2026-55276.html
-
web
https://alas.aws.amazon.com/cve/html/CVE-2026-55955.html
-
web
https://alas.aws.amazon.com/cve/html/CVE-2026-55956.html
-
web
https://alas.aws.amazon.com/cve/html/CVE-2026-59083.html
-
web
https://alas.aws.amazon.com/cve/html/CVE-2026-59084.html