Summary
Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2026-24733: A flaw was found in Tomcat. An improper input validation vulnerability allows an attacker to bypass security constraints. Specifically, if a security constraint is configured to permit HEAD requests to a URI but deny GET requests, a malformed or specification invalid HEAD request using the HTTP/0.9 protocol can bypass the intended denial rule, enabling an attacker to access resources that should be protected.
Fixed packages 10
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2 | tomcat | 0:7.0.76-10.amzn2.0.16 |
| Amazon Linux · 2 | tomcat-admin-webapps | 0:7.0.76-10.amzn2.0.16 |
| Amazon Linux · 2 | tomcat-docs-webapp | 0:7.0.76-10.amzn2.0.16 |
| Amazon Linux · 2 | tomcat-el-2.2-api | 0:7.0.76-10.amzn2.0.16 |
| Amazon Linux · 2 | tomcat-javadoc | 0:7.0.76-10.amzn2.0.16 |
| Amazon Linux · 2 | tomcat-jsp-2.2-api | 0:7.0.76-10.amzn2.0.16 |
| Amazon Linux · 2 | tomcat-jsvc | 0:7.0.76-10.amzn2.0.16 |
| Amazon Linux · 2 | tomcat-lib | 0:7.0.76-10.amzn2.0.16 |
| Amazon Linux · 2 | tomcat-servlet-3.0-api | 0:7.0.76-10.amzn2.0.16 |
| Amazon Linux · 2 | tomcat-webapps | 0:7.0.76-10.amzn2.0.16 |
Vulnerabilities 1
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Medium 6.5CVE-2026-24733 Public exploit
Apache Tomcat: Security constraint bypass with HTTP/0.9
Improper Input Validation vulnerability in Apache Tomcat. Tomcat did not limit HTTP/0.9 requests to the GET method. If a security constraint was configured to allow HEAD requests to a URI but deny GET requests, the user could bypass that constraint on GET req…
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2026-24733.html