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CVE-2024-23672 Apache Tomcat

Affected softwareApache Tomcat
Severity6.3 Medium CVSS 3.1
Fixed in11.0.0-M17, 10.1.19, 9.0.86, 8.5.99
WeaknessCWE-459
Published13 Mar 2024
Updated17 Jun 2026

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.

Exploitation status

No public exploit

No exploit has been reported in the sources we check. Published 2 years ago.

  • CISA KEV not listed
  • VulnCheck KEV not listed
  • CISA Vulnrichment exploitation: none
  • Indexed PoC none indexed
  • EPSS 2.3% chance in 30 days

Waratek protection

No exploit published

Within Waratek scope. In the sources we check, nobody has published exploit code for this CVE or reported it being exploited.

A public code fix exists: apache/tomcat 0052b37.

  • Protection none
  • Action unverified
  • Review automated Upstream data
  • Record active
Decided by Exploit code for this candidate, published in a reviewed catalogue or a GitHub repository with 5 or more stars, or in use per CISA or VulnCheck; not only a CISA verdict, a forecast, or nothing at all
Finding This CVE is not listed in CISA KEV or VulnCheck KEV, CISA Vulnrichment records no active exploitation, no reviewed exploit catalogue carries an entry for it, and no GitHub PoC repository for it has 5 or more stars. Nobody has published exploit code worth tracing, so it is not a candidate for a rule ahead of the ones where somebody has; an upstream fix path does exist, so the remediation half of the candidacy still holds. This is a statement about what has been published, not about whether the defect is reachable or serious.

Affected software and releases

Oracle advisories

AdvisoryTypeQuarterProducts Oracle names in its risk matrix
Oracle Critical Patch Update April 2025 ↗ CPU 2025-Q2 Oracle Autonomous Health Framework / Trace File Analyzer (Apache Tomcat) (23.8.0-23.11.0, 24.1.0-24.11.0, 25.1.0, 25.2.0)
Oracle Critical Patch Update January 2025 ↗ CPU 2025-Q1 Oracle Supply Chain / Document Management (Apache Tomcat) (6.2.1)
Oracle Critical Patch Update October 2024 ↗ CPU 2024-Q4 Oracle Communications / CMP (Apache Tomcat) (12.6.1.0.0, 15.0.0.0.0)
Oracle Critical Patch Update July 2024 ↗ CPU 2024-Q3 Oracle Communications / Patches (Apache Tomcat) (8.6.0.4-8.6.0.6)

Oracle components and versions

FamilyComponentVersions, as Oracle lists themRead as
Oracle Autonomous Health Framework Trace File Analyzer (Apache Tomcat) 23.8.0-23.11.0, 24.1.0-24.11.0, 25.1.0, 25.2.0 25.1.0 · 25.2.0
Oracle Communications CMP (Apache Tomcat) 12.6.1.0.0, 15.0.0.0.0 12.6.1.0.0 · 15.0.0.0.0
Oracle Communications Patches (Apache Tomcat) 8.6.0.4-8.6.0.6
Oracle Supply Chain Document Management (Apache Tomcat) 6.2.1 6.2.1

Maven packages

Affected and fixed versions, from OSV.dev
PackageIntroducedFixedLast affected
org.apache.tomcat:tomcat-websocket 11.0.0-M1 11.0.0-M17 unbounded
org.apache.tomcat:tomcat-websocket 10.1.0-M1 10.1.19 unbounded
org.apache.tomcat:tomcat-websocket 9.0.0-M1 9.0.86 unbounded
org.apache.tomcat:tomcat-websocket 8.5.0 8.5.99 unbounded
org.apache.tomcat.embed:tomcat-embed-websocket 11.0.0-M1 11.0.0-M17 unbounded
org.apache.tomcat.embed:tomcat-embed-websocket 10.1.0-M1 10.1.19 unbounded
org.apache.tomcat.embed:tomcat-embed-websocket 9.0.0-M1 9.0.86 unbounded
org.apache.tomcat.embed:tomcat-embed-websocket 8.5.0 8.5.99 unbounded

Products and versions

5 products, 30 version entries
SourceVendorProductSchemeAffected versions
nvd apache tomcat generic ≥ 8.5.0 and < 8.5.99 · ≥ 9.0.0 and < 9.0.86 · ≥ 10.1.0 and < 10.1.19 · 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:milestone2 · 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
nvd debian debian linux generic 10.0
nvd fedoraproject fedora generic 39 · 40
osv org.apache.tomcat tomcat-websocket generic ≥ 8.5.0 and < 8.5.99 · ≥ 9.0.0 and < 9.0.86 · ≥ 10.1.0 and < 10.1.19 · ≥ 11.0.0 and < 11.0.0
osv org.apache.tomcat.embed tomcat-embed-websocket generic ≥ 8.5.0 and < 8.5.99 · ≥ 9.0.0 and < 9.0.86 · ≥ 10.1.0 and < 10.1.19 · ≥ 11.0.0 and < 11.0.0

References

URLTags
https://github.com/apache/tomcat/commit/0052b374684b613b0c849899b325ebe334ac6501 WEB
https://github.com/apache/tomcat/commit/3631adb1342d8bbd8598802a12b63ad02c37d591 WEB
https://github.com/apache/tomcat/commit/52d6650e062d880704898d7d8c1b2b7a3efe8068 WEB
https://github.com/apache/tomcat/commit/b0e3b1bd78de270d53e319d7cb79eb282aa53cb9 WEB
https://github.com/apache/tomcat PACKAGE
https://lists.apache.org/thread/cmpswfx6tj4s7x0nxxosvfqs11lvdx2f WEB
https://lists.debian.org/debian-lts-announce/2024/04/msg00001.html WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3UWIS5MMGYDZBLJYT674ZI5AWFHDZ46B WEB
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/736G4GPZWS2DSQO5WKXO3G6OMZKFEK55 WEB
https://security.netapp.com/advisory/ntap-20240402-0002 WEB

Timeline

Published2024-03-13By the CVE Program.
NVD record modified2026-06-17NVD's own last-modified date for this record.