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  4. CVE 2024 5971 undertow response write hangs in case of java 17
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Back to active CVEs
High ยท CVSS 7.5CVE-2024-5971GHSA-XPP6-8R3J-WW43

Undertow: response write hangs in case of java 17 tlsv1.3 newsessionticketCVE-2024-5971

Answer in brief

CVE-2024-5971 records a High severity (CVSS 7.5) vulnerability in Undertow: response write hangs in case of java 17 tlsv1.3 newsessionticket. The current sources do not mark it as known exploited. The current feed maps undertow (generic), Red Hat/undertow (generic), io.undertow:undertow-core (maven), io.undertow:undertow-core (maven). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 8, 2024Updated Nov 7, 2026Source checked Nov 7, 2026First seen by HOL Aug 7, 2026Material review Nov 7, 2026
Upstream Advisory

Key facts

Risk
High ยท CVSS 7.5
Exploitation
Not marked as known exploited
Affected software
4 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps undertow (generic), Red Hat/undertow (generic), io.undertow:undertow-core (maven), io.undertow:undertow-core (maven). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
undertowgeneric>=0 <2.2.34.Final || >=2.3.0.Alpha1 <2.3.15.Final2.2.34.Final, 2.3.15.Final
Red Hat/undertowgeneric*Not reported
io.undertow:undertow-coremaven>=2.3.0.Alpha1 <2.3.15.Final2.3.15.Final
io.undertow:undertow-coremaven>=0 <2.2.34.Final2.2.34.Final

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for undertow, Red Hat/undertow, io.undertow:undertow-core.
  2. 2Review the reported fix. Source-reported workaround: 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.

Evidence timeline and material changes

  1. Published upstream

    Jul 8, 2024

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 7, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Aug 7, 2026

Sources and claim methodology

  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referenceaccess.redhat.com
  • Source referencebugzilla.redhat.com
  • Source referencesecurity.netapp.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
  • Source referenceissues.redhat.com
  • NVD vulnerability recordnvd.nist.gov
Upstream source description

A vulnerability was found in Undertow, where the chunked response hangs after the body was flushed. The response headers and body were sent but the client would continue waiting as Undertow does not send the expected 0\r\n termination of the chunked response. This results in uncontrolled resource consumption, leaving the server side to a denial of service attack. This happens only with Java 17 TLSv1.3 scenarios.

Quoted source text, attributed separately from HOL analysis.

Record context

Vulnerability class
Vulnerability
EPSS
Not reported
CWE IDs
CWE-674
Source
CVE List V5
Source checked
Nov 7, 2026
References
17 linked sources
Open source record