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MEDIUM severity

Denial of Service via incomplete cleanup vulnerability in Apache TomcatGHSA-v682-8vv8-vpwr

MEDIUMFix: apache/tomcat@0052b37

GHSA-v682-8vv8-vpwr is a medium-severity (CVSS 6.3) CWE-459 vulnerability in org.apache.tomcat:tomcat-websocket. A fix is available for org.apache.tomcat:tomcat-websocket — see the affected versions and patch details below.

Also known asBIT-tomcat-2024-23672CVE-2024-23672
Published
Updated
Affected
8 pkgs
Patched
8 / 8
Exploits
None indexed
Exploitation data as of Nov 8, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for GHSA-v682-8vv8-vpwr.

EPSS Exploitation Probability

via FIRST.org ↗
2.3%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs84th percentile — riskier than 84% of all scored CVEsHighest risk
0.82%1.49%2.15%2.81%1.3%2.3%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

8 pkgs affected
☕org.apache.tomcat:tomcat-websocket☕org.apache.tomcat:tomcat-websocket☕org.apache.tomcat:tomcat-websocket☕org.apache.tomcat:tomcat-websocket☕org.apache.tomcat.embed:tomcat-embed-websocket☕org.apache.tomcat.embed:tomcat-embed-websocket☕org.apache.tomcat.embed:tomcat-embed-websocket☕org.apache.tomcat.embed:tomcat-embed-websocket

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Maven packages — download data is not available via public APIs for these ecosystems.

Description

Denial of Service via incomplete cleanup vulnerability in Apache Tomcat. It was possible for WebSocket clients to keep WebSocket connections open leading to increased resource consumption.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.

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.

Affected Packages

8 total 8 fixed
EcosystemPackageVulnerable rangeFix
☕Mavenorg.apache.tomcat:tomcat-websocket≥ 11.0.0-M1&&< 11.0.0-M1711.0.0-M17org.apache.tomcat:tomcat-websocket:11.0.0-M17
☕Mavenorg.apache.tomcat:tomcat-websocket≥ 10.1.0-M1&&< 10.1.1910.1.19org.apache.tomcat:tomcat-websocket:10.1.19
☕Mavenorg.apache.tomcat:tomcat-websocket≥ 9.0.0-M1&&< 9.0.869.0.86org.apache.tomcat:tomcat-websocket:9.0.86
☕Mavenorg.apache.tomcat:tomcat-websocket≥ 8.5.0&&< 8.5.998.5.99org.apache.tomcat:tomcat-websocket:8.5.99
☕Mavenorg.apache.tomcat.embed:tomcat-embed-websocket≥ 11.0.0-M1&&< 11.0.0-M1711.0.0-M17org.apache.tomcat.embed:tomcat-embed-websocket:11.0.0-M17
☕Mavenorg.apache.tomcat.embed:tomcat-embed-websocket≥ 10.1.0-M1&&< 10.1.1910.1.19org.apache.tomcat.embed:tomcat-embed-websocket:10.1.19

Affected Products

3 products · 22 configurations
Application
tomcatapache
≥ 10.1.0 && < 10.1.19
1 version
11.0.0
OS
debian linuxdebian
1 version
10.0
OS
fedorafedoraproject
2 versions
3940

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for org.apache.tomcat:tomcat-websocket, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update org.apache.tomcat:tomcat-websocket to 11.0.0-M17 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-v682-8vv8-vpwr is resolved across your whole dependency graph.

  3. Workarounds

    Cap what an attacker can consume: apply request size, rate and timeout limits in front of the affected component, and run it with memory and CPU limits so exhaustion degrades one worker rather than the whole service.

Fixing This On Your OS

If you run this on a Linux distribution, patch through your package manager against the distro's own security advisory below — it tracks the exact backported fix for your release, which can ship on a different timeline (and sometimes a different severity) than the upstream project.

Red HatImportant

This Denial of Service (DoS) vulnerability within the Apache Tomcat package represents an Important severity issue due to its potential to significantly impact system availability and performance. By allowing WebSocket clients to maintain open connections without proper cleanup, the vulnerability facilitates the…

Workaround published by Red Hat
Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Source: Red Hat security advisory for GHSA-v682-8vv8-vpwr (CC BY 4.0)
ProductFixed inAdvisory
Red Hat Enterprise Linux 10tomcat-1:10.1.36-1.el10_0RHSA-2025:7497
Red Hat Enterprise Linux 8tomcat-1:9.0.87-1.el8_10.1RHSA-2024:3666
Red Hat Enterprise Linux 8.8 Extended Update Supporttomcat-1:9.0.87-1.el8_8.2RHSA-2024:3814
Red Hat Enterprise Linux 9tomcat-1:9.0.87-1.el9_4.1RHSA-2024:3307
Red Hat Enterprise Linux 9.2 Extended Update Supporttomcat-1:9.0.87-1.el9_2.1RHSA-2024:3308
Red Hat JBoss Web Server 5tomcatRHSA-2024:1914
Red Hat JBoss Web Server 5.8 on RHEL 7jws5-tomcat-0:9.0.87-3.redhat_00003.1.el7jwsRHSA-2024:1913
Red Hat JBoss Web Server 6tomcatRHSA-2024:1917

Frequently Asked Questions

Denial of Service via incomplete cleanup vulnerability in Apache Tomcat. It was possible for WebSocket clients to keep WebSocket connections open leading to increased resource consumption.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. 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.
O3 Security · Impact-Aware SCA

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