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Vulnerability record · CVE-2024-24549 · published 13 March 2024

CVE-2024-24549: Apache tomcat improper input validation vulnerability

Apache · Tomcat

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.

7.5 CVSS 3.1 High EPSS 23% · top 2.3% CWE-20 · Improper input validation
7.5CVSS 3.1 base score
23%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
7References
17 Jun 2026Last modified by NVD

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.

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://lists.apache.org/thread/4c50rmomhbbsdgfjsgwlb51xdwfjdcvg Vendor Advisory
http://www.openwall.com/lists/oss-security/2024/03/13/3 Mailing List
https://lists.apache.org/thread/4c50rmomhbbsdgfjsgwlb51xdwfjdcvg Vendor Advisory
https://lists.debian.org/debian-lts-announce/2024/04/msg00001.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/3UWIS5MMGYDZBLJYT674ZI5AW Third Party Advisory
https://lists.fedoraproject.org/archives/list/[email protected]/message/736G4GPZWS2DSQO5WKXO3G6OM Third Party Advisory
https://security.netapp.com/advisory/ntap-20240402-0002/ Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2024-24549), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.