A flaw was found in Undertow that can cause remote denial of service attacks. When the server uses the FormEncodedDataDefinition.doParse(StreamSourceChannel) method to parse large form data encoding with application/x-www-form-urlencoded, the method will cause an OutOfMemory issue. This flaw allows unauthorized users to cause a remote denial of service (DoS) attack.
CVE-2024-3884
This high-severity CVE scores 7.5 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit probability: 1.4%, top 30% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- High severity, but no confirmed exploitation yet
A fix is available — apply it.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- 49(Track)EG Risk 49/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity75% × 45%Exploitation1% × 40%Automatability100% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 1%
- EPSS %ILE
- 70%
- KEV
- Not listed
Published
December 3, 2025
Last Modified
August 19, 2026
Advisory Details (10)
Auto-updated Jul 7, 2026Affected: Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common
https://access.redhat.com/errata/RHSA-2026:4917Affected: Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common
https://access.redhat.com/errata/RHSA-2026:4916Affected: Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important. A Common
https://access.redhat.com/errata/RHSA-2026:4915Affected: Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common
https://access.redhat.com/errata/RHSA-2026:3891Affected: Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common
https://access.redhat.com/errata/RHSA-2026:3889Affected: Red Hat Enterprise Linux 8.
https://access.redhat.com/errata/RHSA-2026:0386Affected: Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of Important. A Common
https://access.redhat.com/errata/RHSA-2026:0384Affected: Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Important. A Common
https://access.redhat.com/errata/RHSA-2026:0383Vendor Advisories for CVE-2024-3884(12)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
- RHSA-2026:6011Red Hat Product SecurityCritical
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.3.17 security update
- RHSA-2026:6012Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.1.14 security update
- RHSA-2026:4924Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.24 security update
- RHSA-2026:4917Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.24 security update
- RHSA-2026:4915Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.24 security update
- RHSA-2026:4916Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.24 security update
- RHSA-2026:3889Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.0.12 security update
- RHSA-2026:3891Red Hat Product SecurityHigh
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 8.0.12 security update
- +4 more
Patch Availability(10)
| Vendor / Ecosystem | Fixed in / Patch | Released | Source |
|---|---|---|---|
| redhat | eap7-wildfly-0:7.1.14-4.GA_redhat_00003.1.ep7.el7 | 2026-03-30 | redhat |
| redhat | eap7-wildfly-0:7.3.17-5.GA_redhat_00006.1.el7eap | 2026-03-30 | redhat |
| redhat | undertow | 2026-03-18 | redhat |
| redhat | eap7-wildfly-0:7.4.24-4.GA_redhat_00002.1.el7eap | 2026-03-18 | redhat |
| redhat | eap7-wildfly-0:7.4.24-4.GA_redhat_00002.1.el9eap | 2026-03-18 | redhat |
| redhat | eap7-wildfly-0:7.4.24-4.GA_redhat_00002.1.el8eap | 2026-03-18 | redhat |
| redhat | eap8-undertow-0:2.3.23-1.SP3_redhat_00001.1.el9eap | 2026-03-05 | redhat |
| redhat | eap8-undertow-0:2.3.23-1.SP3_redhat_00001.1.el8eap | 2026-03-05 | redhat |
| redhat | eap8-wildfly-javadocs-0:8.1.1-4.GA_redhat_00007.1.el8eap | 2026-01-08 | redhat |
| redhat | eap8-wildfly-javadocs-0:8.1.1-4.GA_redhat_00007.1.el9eap | 2026-01-08 | redhat |
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 | Fixed in | Dependents |
|---|---|---|---|
| undertow | 1.3.11-1 ... 2.3.8-2 (56 versions) | — | — |
Maven(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| io.undertow:undertow-core | 2.3.0.Alpha1 ... 2.3.9.Final (24 versions) | 2.3.21.Final | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 8× in last 7d / 50× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.
Showing the most recent 100 of 170 total refreshes for this CVE.
- 2026-08-25 13:47 UTCEPSS rescore
- 2026-08-24 14:15 UTCEPSS rescore
- 2026-08-23 00:18 UTCEPSS rescore
- 2026-08-21 23:47 UTCEPSS rescore
- 2026-08-20 22:54 UTCEPSS rescore
- 2026-08-19 17:02 UTCEPSS rescore
- 2026-08-19 08:21 UTCEG score recompute
- 2026-08-19 08:21 UTCVendor advisory
- 2026-08-18 13:46 UTCEPSS rescore
- 2026-08-17 13:45 UTCEPSS rescore
- 2026-08-16 14:54 UTCEPSS rescore
- 2026-08-16 02:13 UTCEPSS rescore
- 2026-08-15 01:28 UTCEPSS rescore
- 2026-08-13 21:59 UTCEPSS rescore
- 2026-08-12 13:49 UTCEPSS rescore
- 2026-08-11 13:40 UTCEPSS rescore
- 2026-08-10 23:58 UTCEPSS rescore
- 2026-08-09 13:45 UTCEPSS rescore
- 2026-08-08 16:35 UTCEPSS rescore
- 2026-08-08 08:43 UTCEG score recompute
- 2026-08-08 08:43 UTCVendor advisory
- 2026-08-07 16:25 UTCEPSS rescore
- 2026-08-06 13:45 UTCEPSS rescore
- 2026-08-05 19:16 UTCEPSS rescore
- 2026-08-05 17:33 UTCVendor advisory
Show 75 moreShow fewer
- 2026-08-05 16:53 UTCEG score recompute▲ 7.50
- 2026-08-05 16:53 UTCVendor advisory
- 2026-08-05 16:50 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
- 2026-08-04 22:32 UTCVendor advisory
- 2026-08-04 22:31 UTCNVD update
- 2026-08-04 21:46 UTCVendor advisory
- 2026-08-04 21:40 UTCMITRE cvelistV5
- 2026-08-04 15:08 UTCEPSS rescore
- 2026-08-04 10:36 UTCEPSS rescore
- 2026-08-04 08:19 UTCVendor advisory
- 2026-08-04 08:18 UTCNVD update
- 2026-08-04 07:32 UTCEG score recompute▼ 7.50
- 2026-08-04 07:32 UTCVendor advisory
- 2026-08-04 07:28 UTCMITRE cvelistV5
- 2026-08-03 10:34 UTCEPSS rescore
- 2026-08-02 02:25 UTCEPSS rescore
- 2026-08-01 04:14 UTCEPSS rescore
- 2026-07-30 16:26 UTCEPSS rescore
- 2026-07-30 01:29 UTCEPSS rescore
- 2026-07-28 15:34 UTCEPSS rescore
- 2026-07-27 16:38 UTCEG score recompute
- 2026-07-27 16:38 UTCVendor advisory
- 2026-07-27 15:31 UTCEG score recompute
- 2026-07-27 15:31 UTCVendor advisory
- 2026-07-27 14:11 UTCEPSS rescore
- 2026-07-26 14:53 UTCEPSS rescore
- 2026-07-26 14:53 UTCEPSS rescore
- 2026-07-26 09:39 UTCEG score recompute
- 2026-07-26 09:39 UTCVendor advisory
- 2026-07-25 14:16 UTCEPSS rescore
- 2026-07-24 14:16 UTCEPSS rescore
- 2026-07-23 14:17 UTCEPSS rescore
- 2026-07-23 02:38 UTCEG score recompute
- 2026-07-22 14:07 UTCEPSS rescore
- 2026-07-21 15:23 UTCEPSS rescore
- 2026-07-21 15:23 UTCEPSS rescore
- 2026-07-20 17:06 UTCEPSS rescore
- 2026-07-19 02:28 UTCEPSS rescore
- 2026-07-19 02:28 UTCEPSS rescore
- 2026-07-18 10:03 UTCEPSS rescore
- 2026-07-18 10:03 UTCEPSS rescore
- 2026-07-16 17:02 UTCEPSS rescore
- 2026-07-15 16:56 UTCEPSS rescore
- 2026-07-15 16:56 UTCEPSS rescore
- 2026-07-15 01:59 UTCEPSS rescore
- 2026-07-15 01:59 UTCEPSS rescore
- 2026-07-13 22:29 UTCEPSS rescore
- 2026-07-13 06:12 UTCEPSS rescore
- 2026-07-12 05:45 UTCEPSS rescore
- 2026-07-12 05:45 UTCEPSS rescore
- 2026-07-11 08:26 UTCEPSS rescore
- 2026-07-09 19:09 UTCEPSS rescore
- 2026-07-09 19:09 UTCEPSS rescore
- 2026-07-08 15:14 UTCEPSS rescore
- 2026-07-07 13:45 UTCEPSS rescore
- 2026-07-06 16:26 UTCEPSS rescore
- 2026-07-06 02:22 UTCEPSS rescore
- 2026-07-06 02:22 UTCEPSS rescore
- 2026-07-04 06:30 UTCEPSS rescore
- 2026-07-01 15:05 UTCEPSS rescore
- 2026-06-30 23:21 UTCEPSS rescore
- 2026-06-30 23:21 UTCEPSS rescore
- 2026-06-29 14:05 UTCEPSS rescore
- 2026-06-28 14:07 UTCEPSS rescore
- 2026-06-28 14:06 UTCEPSS rescore
- 2026-06-28 04:55 UTCEPSS rescore
- 2026-06-28 04:55 UTCEPSS rescore
- 2026-06-27 03:07 UTCEPSS rescore
- 2026-06-27 03:07 UTCEPSS rescore
- 2026-06-25 13:49 UTCEPSS rescore
- 2026-06-24 14:04 UTCEPSS rescore
- 2026-06-24 14:04 UTCEPSS rescore
- 2026-06-23 21:32 UTCEPSS rescore
- 2026-06-23 21:32 UTCEPSS rescore
- 2026-06-22 14:25 UTCEPSS rescore
Related CVEs(same vendor + same CWE)
Same vendor
10 shownredhat
- CVE-2001-0825EG 10.0HIGH
- CVE-2001-1009EG 10.0EPSS p93HIGH
- CVE-2001-0554EG 10.0EPSS p98HIGH
- CVE-2001-1162EG 10.0EPSS p96HIGH
- CVE-2001-0414EG 10.0EPSS p100HIGH
- CVE-2001-0191EG 10.0EPSS p92HIGH
- CVE-2001-0301EG 10.0EPSS p91HIGH
- CVE-2001-0197EG 10.0EPSS p96HIGH
- CVE-2001-0233EG 10.0EPSS p96HIGH
- CVE-2001-0010EG 10.0EPSS p98HIGH
Same CWE
10 shownCWE-20
- CVE-2005-0050EG 10.0EPSS p99HIGH
- CVE-2004-1019EG 10.0EPSS p94HIGH
- CVE-2004-0840EG 10.0EPSS p98HIGH
- CVE-2003-1425EG 10.0EPSS p96HIGH
- CVE-2003-1487EG 10.0EPSS p94HIGH
- CVE-2002-1874EG 10.0HIGH
- CVE-2002-2236EG 10.0EPSS p91HIGH
- CVE-2002-2365EG 10.0HIGH
- CVE-2002-1358EG 10.0EPSS p93HIGH
- CVE-2002-1359EG 10.0EPSS p100HIGH
Frequently asked(5)
What is CVE-2024-3884?
When was CVE-2024-3884 disclosed?
Is CVE-2024-3884 actively exploited?
What is the CVSS score of CVE-2024-3884?
How do I remediate CVE-2024-3884?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2024-3884
Is Your Infrastructure Affected by CVE-2024-3884?
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