CVE-2024-24549

HIGH
Published Mar 13, 2024 Modified Oct 29, 2025 CWE-20

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.

Is your site exposed to CVE-2024-24549?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

7.5
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness Type (CWE)

CWE-20 Improper Input Validation

Affected Products

Vendor Product
apache tomcat
apache tomcat
apache tomcat
apache tomcat
apache tomcat
apache tomcat
apache tomcat
apache tomcat
apache tomcat
apache tomcat
apache tomcat
apache tomcat
apache tomcat
apache tomcat
apache tomcat
apache tomcat
apache tomcat
apache tomcat
apache tomcat
debian debian_linux
fedoraproject fedora
fedoraproject fedora

References

Frequently Asked Questions

What is CVE-2024-24549? +
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. It has a CVSS v3.1 base score of 7.5 (HIGH).
How severe is CVE-2024-24549? +
CVE-2024-24549 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2024-24549? +
CVE-2024-24549 affects products from apache, debian, fedoraproject, specifically: debian_linux, fedora, tomcat. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-24549? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

Don't wait for an exploit

Scan your website for vulnerabilities like CVE-2024-24549 — free, no signup required.