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Moderate severityNVD Advisory· Published Mar 13, 2024· Updated Oct 29, 2025

Apache Tomcat: HTTP/2 header handling DoS

CVE-2024-24549

Description

Denial of Service due to improper input validation vulnerability for HTTP/2 requests in Apache Tomcat. When processing an HTTP/2 request, if the request exceeded any of the configured limits for headers, the associated HTTP/2 stream was not reset until after all of the headers had been processed.This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M16, from 10.1.0-M1 through 10.1.18, from 9.0.0-M1 through 9.0.85, from 8.5.0 through 8.5.98. Other, older, EOL versions may also be affected.

Users are recommended to upgrade to version 11.0.0-M17, 10.1.19, 9.0.86 or 8.5.99 which fix the issue.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
org.apache.tomcat:tomcat-coyoteMaven
>= 11.0.0-M1, < 11.0.0-M1711.0.0-M17
org.apache.tomcat:tomcat-coyoteMaven
>= 10.1.0-M1, < 10.1.1910.1.19
org.apache.tomcat:tomcat-coyoteMaven
>= 9.0.0-M1, < 9.0.869.0.86
org.apache.tomcat:tomcat-coyoteMaven
>= 8.5.0, < 8.5.998.5.99
org.apache.tomcat.embed:tomcat-embed-coreMaven
>= 8.5.0, < 8.5.998.5.99
org.apache.tomcat.embed:tomcat-embed-coreMaven
>= 9.0.0-M1, < 9.0.869.0.86
org.apache.tomcat.embed:tomcat-embed-coreMaven
>= 10.1.0-M1, < 10.1.1910.1.19
org.apache.tomcat.embed:tomcat-embed-coreMaven
>= 11.0.0-M1, < 11.0.0-M1711.0.0-M17

Affected products

119

Patches

Vulnerability mechanics

References

12

News mentions

0

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