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.
CVE-2024-5971
“—” beside the score: it is equal to NVD's CVSS score.
Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2024-07-08. NVD baseline CVSS 7.5; sources differ by 0.0.
Also known asEUVD-2024-2452 (ENISA EUVD) · GHSA-xpp6-8r3j-ww43 (GitHub Security Advisories)Source: ENISA EUVD
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5HIGHmedium confidence
- EG Risk
- 50EG Risk 50/100
EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.
How it’s computed (value × EchelonGraph’s weight)Severity75% × 45%Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.Exploitation2.9% × 40%FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.Automatability100% × 15%CISA's SSVC Automatable value: yes (Vulnrichment).SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high. - EPSS PROB
- 2.9%
- EPSS %ILE
- 87th
- KEV
- Not listed
What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)
The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.
- EG Severity
- 7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
- EG Likelihood
- 2.9% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-31). FIRST's exploitation probability, not an EchelonGraph model.
- Confirmed exploitation
- None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
- EG Priority
- SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.
SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).
A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; 60 days if it is not.
The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
Published
July 8, 2024
Last Modified
September 4, 2026
Advisory Details (10)
Auto-updated Aug 8, 20262292211 – (CVE-2024-5971) CVE-2024-5971 undertow: response write hangs in case of Java 17 TLSv1.3 NewSessionTicket
https://bugzilla.redhat.com/show_bug.cgi?id=2292211CVE-2024-5971 - Red Hat Customer Portal
Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a
https://access.redhat.com/security/cve/CVE-2024-5971Affected: Red Hat Enterprise Linux 9.
https://access.redhat.com/errata/RHSA-2024:5145Affected: Red Hat Enterprise Linux 8.
https://access.redhat.com/errata/RHSA-2024:5144Affected: Red Hat Enterprise Linux 7.
https://access.redhat.com/errata/RHSA-2024:5143Vendor Advisories for CVE-2024-5971(8)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2024:6883Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Build of Apache Camel 3.20.7 for Spring Boot security update.
- RHSA-2024:6508Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Build of Apache Camel 4.4.2 for Spring Boot security update.
- RHSA-2024:5147Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.18 Security update
- RHSA-2024:5144Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.18 Security update
- RHSA-2024:5143Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.18 Security update
- RHSA-2024:5145Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.18 Security update
- RHSA-2024:4884Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat Build of Apache Camel 4.4.1 for Spring Boot security update.
- RHSA-2024:4392Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.0.2 Security update
Patch Availability(10)
| Vendor / Ecosystem | Fix (by version range) / Patch | Released | Source |
|---|---|---|---|
| redhat | undertow | 2024-09-19 | redhat |
| redhat | patch | 2024-09-09 | redhat |
| redhat | eap7-undertow-0:2.2.33-1.SP1_redhat_00001.1.el8eap | 2024-08-08 | redhat |
| redhat | eap7-undertow-0:2.2.33-1.SP1_redhat_00001.1.el9eap | 2024-08-08 | redhat |
| redhat | eap7-undertow-0:2.2.33-1.SP1_redhat_00001.1.el7eap | 2024-08-08 | redhat |
| redhat | io.undertow/undertow-core:2.2.33.SP1-redhat-00001 | 2024-08-08 | redhat |
| redhat | undertow-core | 2024-07-08 | redhat |
| debian:13 | undertow @ 2.3.18-1 (fixes >=0) | — | osv |
| maven | io.undertow:undertow-core @ 2.3.15.Final (fixes >= 2.3.0.Alpha1, < 2.3.15.Final) | — | ghsa |
| maven | io.undertow:undertow-core @ 2.2.34.Final (fixes < 2.2.34.Final) | — | ghsa |
Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.
Affected Packages
(2 across 2 ecosystems)
Debian:14(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| undertow | 1.3.11-1 ... 2.3.8-2 (53 versions) |
| — |
Maven(1)
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| io.undertow:undertow-core | 1.0.0.Alpha1 ... 2.2.9.Final (302 versions) |
| — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 11× in last 7d / 40× in last 30d)
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
Showing the most recent 95 of 227 refreshes on record for this CVE.
A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 5 repeat rows among the latest 100 are merged into the row they repeat. The 132 oldest rows on record are not shown and were not checked, so the counts can still include repeats.
- 2026-11-01 16:32 UTCEPSS rescoreEPSS 2.9% · 87th percentile
- 2026-11-01 08:10 UTCGHSA enrichmentGHSA-xpp6-8r3j-ww43 · GitHub severity HIGH · GitHub CVSS 7.5
- 2026-11-01 08:10 UTCEG score recompute
- 2026-10-31 16:30 UTCEPSS rescoreEPSS 2.9% · 87th percentile
- 2026-10-30 16:32 UTCEPSS rescoreEPSS 2.9% · 87th percentile
- 2026-10-29 16:31 UTCEPSS rescoreEPSS 2.9% · 87th percentile
- 2026-10-28 16:30 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-27 18:39 UTCEG score recompute
- 2026-10-27 18:39 UTCVendor advisory
- 2026-10-27 16:30 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-26 16:29 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-25 16:53 UTCEG score recompute
- 2026-10-25 16:30 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-24 16:30 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-23 16:30 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-22 16:31 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-21 16:30 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-20 16:30 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-19 16:30 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-19 15:07 UTCEG score recompute
- 2026-10-19 15:07 UTCVendor advisory
- 2026-10-18 16:30 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-18 05:57 UTCEG score recompute
- 2026-10-17 16:31 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-16 16:37 UTCEPSS rescoreEPSS 2.9% · 86th percentile
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- 2026-10-15 16:30 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-14 22:24 UTCOSV refresh
- 2026-10-14 16:30 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-13 16:31 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-12 17:35 UTCEG score recompute
- 2026-10-12 16:31 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-11 21:02 UTCEG score recompute
- 2026-10-11 15:53 UTCEG score recompute
- 2026-10-11 13:46 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-10 19:58 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-09 20:05 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-08 17:08 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-07 23:46 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-06 15:16 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-05 17:41 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-03 14:24 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-10-02 16:27 UTCEG score recompute
- 2026-10-01 19:48 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-30 15:02 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-28 13:50 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-27 13:44 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-26 15:57 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-24 14:01 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-23 20:41 UTCOSV refresh
- 2026-09-23 13:46 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-22 14:47 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-20 20:14 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-18 19:26 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-16 14:06 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-16 05:12 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-15 03:08 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-13 16:45 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-12 14:59 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-11 14:51 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-11 09:35 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-10 09:33 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-08 21:59 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-07 16:00 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-06 13:46 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-04 15:26 UTCVendor advisory
- 2026-09-04 14:25 UTCEG score recompute
- 2026-09-04 14:25 UTCVendor advisory
- 2026-09-04 13:59 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-04 05:05 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-02 14:10 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-09-01 13:52 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-08-30 19:16 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-08-30 01:21 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-08-28 21:39 UTCEPSS rescoreEPSS 2.9% · 85th percentile
- 2026-08-27 14:24 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-08-26 14:44 UTCEPSS rescoreEPSS 2.9% · 86th percentile
- 2026-08-25 13:47 UTCEPSS rescoreEPSS 2.9% · 85th percentile
- 2026-08-24 23:53 UTCOSV refresh
- 2026-08-24 14:15 UTCEPSS rescoreEPSS 2.9% · 85th percentile
- 2026-08-23 00:18 UTCEPSS rescoreEPSS 2.7% · 84th percentile
- 2026-08-21 23:47 UTCEPSS rescoreEPSS 2.7% · 84th percentile
- 2026-08-20 22:54 UTCEPSS rescoreEPSS 2.7% · 84th percentile
- 2026-08-19 17:02 UTCEPSS rescoreEPSS 2.7% · 84th percentile
- 2026-08-18 13:47 UTCEPSS rescoreEPSS 2.7% · 84th percentile
- 2026-08-17 13:45 UTCEPSS rescoreEPSS 2.7% · 84th percentile
- 2026-08-16 14:55 UTCEPSS rescoreEPSS 2.7% · 84th percentile
- 2026-08-16 02:13 UTCEPSS rescoreEPSS 2.7% · 84th percentile
- 2026-08-15 01:29 UTCEPSS rescoreEPSS 2.7% · 84th percentile
- 2026-08-13 21:59 UTCEPSS rescoreEPSS 2.7% · 84th percentile
- 2026-08-12 13:49 UTCEPSS rescoreEPSS 2.7% · 84th percentile
- 2026-08-11 13:41 UTCEPSS rescoreEPSS 2.7% · 84th percentile
- 2026-08-10 23:58 UTCEPSS rescoreEPSS 2.7% · 84th percentile
- 2026-08-09 13:45 UTCEPSS rescoreEPSS 2.7% · 84th percentile
- 2026-08-08 17:23 UTCEG score recompute
- 2026-08-08 17:23 UTCVendor advisory
Related CVEs(same product + same vendor + same CWE)
Same product
10 shownMaven:io.undertow:undertow-core
Same vendor
10 shownredhat:RHSA-2024:4392 · redhat:RHSA-2024:4884 · redhat:RHSA-2024:6508
Frequently asked(5)
What is CVE-2024-5971?
When was CVE-2024-5971 made public?
Is CVE-2024-5971 actively exploited?
What is the CVSS score of CVE-2024-5971?
How do I remediate CVE-2024-5971?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2024-5971
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