7.5

CVE-2024-34750: Apache Tomcat: HTTP/2 excess header handling DoS

Modified
AliasesMGASA-2024-0267SUSE-SU-2024:2413-1SUSE-SU-2024:2485-1
Published 03-07-2024Last modified 03-11-2025

Vulnerability summary

CVE-2024-34750 is a high (CVSS 7.5) Uncontrolled Resource Consumption vulnerability in apache software foundation apache tomcat. EPSS estimates a 4.60% chance of exploitation in the next 30 days, higher than 91.6% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 5% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
4.60%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 12 · Related 4
DLA-4244-1DSA-5845-1RHSA-2024:4976RHSA-2024:5024RHSA-2024:5693RHSA-2024:5694

Timeline

  1. 03-07-2024
    PublishedVulnerability first disclosed.
  2. 03-11-2025
    Last modifiedVulnerability information updated.

Description

Improper Handling of Exceptional Conditions, Uncontrolled Resource Consumption vulnerability in Apache Tomcat. When processing an HTTP/2 stream, Tomcat did not handle some cases of excessive HTTP headers correctly. This led to a miscounting of active HTTP/2 streams which in turn led to the use of an incorrect infinite timeout which allowed connections to remain open which should have been closed. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M20, from 10.1.0-M1 through 10.1.24, from 9.0.0-M1 through 9.0.89. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 though 8.5.100. Other EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0-M21, 10.1.25 or 9.0.90, which fixes the issue.

CVSS metrics

8 scores · 7 sources · 2 versions

EPSS trend

Probability

4.60%

Chance of exploitation in the next 30 days

Percentile

92%

Versus all other CVEs

30-day change

No change 0.00 pp

From 4.60% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

Suse18 products
  • tomcat10&distro=SUSE Linux Enterprise Module for Web and Scripting 15 SP5< 10.1.25-150200.5.25.1
  • tomcat10&distro=SUSE Linux Enterprise Module for Web and Scripting 15 SP6< 10.1.25-150200.5.25.1
  • tomcat&distro=SUSE Enterprise Storage 7.1< 9.0.91-150200.68.1
  • tomcat&distro=SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS< 9.0.91-150200.68.1
  • tomcat&distro=SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS< 9.0.91-150200.68.1
Opensuse6 products
  • tomcat10&distro=openSUSE Leap 15.5< 10.1.25-150200.5.25.1
  • tomcat10&distro=openSUSE Leap 15.6< 10.1.25-150200.5.25.1
  • tomcat10&distro=openSUSE Tumbleweed< 10.1.25-1.1
  • tomcat&distro=openSUSE Leap 15.5< 9.0.91-150200.68.1
  • tomcat&distro=openSUSE Leap 15.6< 9.0.91-150200.68.1
Chainguard2 products
  • thingsboard-tb-mqtt-transport< 4.2.1-r7
  • tomcat-8.5.87All versions (No fix recorded)
Debian2 products
  • tomcat10< 10.1.34-0+deb12u1 | < 10.1.25-1
  • tomcat9< 9.0.70-2
Ubuntu2 products
  • tomcat10< 10.1.16-1ubuntu0.1~esm2
  • tomcat9All versions (No fix recorded) | < 9.0.58-1ubuntu0.2+esm3 | < 9.0.70-2ubuntu0.1+esm2 | < 9.0.70-2ubuntu3
Apache1 product
  • tomcat≥ 9.0.0, < 9.0.90 | ≥ 10.1.0, < 10.1.25 | 11.0.0:milestone1 | 11.0.0:milestone10 | 11.0.0:milestone11 | 11.0.0:milestone12 | 11.0.0:milestone13 | 11.0.0:milestone14 | 11.0.0:milestone15 | 11.0.0:milestone16 | 11.0.0:milestone17 | 11.0.0:milestone18 | 11.0.0:milestone19 | 11.0.0:milestone2 | 11.0.0:milestone20 | 11.0.0:milestone3 | 11.0.0:milestone4 | 11.0.0:milestone5 | 11.0.0:milestone6 | 11.0.0:milestone7 | 11.0.0:milestone8 | 11.0.0:milestone9
Apache software foundation1 product
  • apache tomcat≥ 11.0.0-M1, ≤ 11.0.0-M20 | ≥ 10.1.0-M1, ≤ 10.1.24 | ≥ 9.0.0-M1, ≤ 9.0.89 | ≥ 8.5.0, ≤ 8.5.100
Mageia1 product
  • tomcat< 9.0.90-1.mga9
Netapp1 product
Org.apache.tomcat1 product
  • tomcat-coyote≥ 11.0.0-M1, < 11.0.0-M21 | ≥ 10.1.0-M1, < 10.1.25 | ≥ 9.0.0-M1, < 9.0.90 | ≥ 8.5.0, ≤ 8.5.100
Org.apache.tomcat.embed1 product
  • tomcat-embed-core≥ 11.0.0-M1, < 11.0.0-M21 | ≥ 10.1.0-M1, < 10.1.25 | ≥ 9.0.0-M1, < 9.0.90 | ≥ 8.5.0, ≤ 8.5.100
Wolfi1 product
  • thingsboard-tb-mqtt-transport< 4.2.1-r7

12 vendors · 37 products

References

25 links
Show all 25 references