CVE-2024-3884

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit probability: 1.4% (70th percentile of EPSS-scored CVEs). 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).

Triggered by: NVD CVSS baseline
Sources: cisa-adp, epss
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1.4%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100CISA SSVC

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 computed
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
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
1.4%
EPSS %ILE
70th
KEV
Not listed

CISA SSVCTrack 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). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

December 3, 2025

Last Modified

September 26, 2026

Advisory Details (10)

Auto-updated Jul 7, 2026
Patch available. Sources: redhat.
redhatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2026:4924
redhatMentions a patch (unverified)

Affected: 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-2026:4917
redhatMentions a patch (unverified)

Affected: 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-2026:4916
redhatMentions a patch (unverified)

Affected: 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-2026:4915
redhatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2026:3892
redhatMentions a patch (unverified)

Affected: 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-2026:3891
redhatMentions a patch (unverified)

Affected: 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-2026:3889
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2026:0386
redhatMentions a patch (unverified)

Affected: 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-2026:0384
redhatMentions a patch (unverified)

Affected: 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-2026:0383

Vendor 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.

Patch Availability(12)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhateap7-wildfly-0:7.1.14-4.GA_redhat_00003.1.ep7.el72026-03-30redhat
redhateap7-wildfly-0:7.3.17-5.GA_redhat_00006.1.el7eap2026-03-30redhat
redhateap7-wildfly-0:7.4.24-4.GA_redhat_00002.1.el8eap2026-03-18redhat
redhatio.undertow/undertow-core:2.2.39.Final-redhat-000012026-03-18redhat
redhateap7-wildfly-0:7.4.24-4.GA_redhat_00002.1.el9eap2026-03-18redhat
redhateap7-wildfly-0:7.4.24-4.GA_redhat_00002.1.el7eap2026-03-18redhat
redhatundertow2026-03-05redhat
redhateap8-undertow-0:2.3.23-1.SP3_redhat_00001.1.el9eap2026-03-05redhat
redhateap8-undertow-0:2.3.23-1.SP3_redhat_00001.1.el8eap2026-03-05redhat
redhatio.undertow/undertow-core:2.3.24.SP2-redhat-000012026-01-08redhat
redhateap8-wildfly-javadocs-0:8.1.1-4.GA_redhat_00007.1.el9eap2026-01-08redhat
redhateap8-wildfly-javadocs-0:8.1.1-4.GA_redhat_00007.1.el8eap2026-01-08redhat

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)
PackageVulnerable rangeFix by version rangeDependents
undertow1.3.11-1 ... 2.3.8-2 (56 versions)
  • every version on: no fix on record
—
Maven(1)
PackageVulnerable rangeFix by version rangeDependents
io.undertow:undertow-core2.3.0.Alpha1 ... 2.3.9.Final (24 versions)
  • every version up to 2.2.39.Final: fixed in 2.2.39.Final
  • 2.4.0.Alpha1 up to 2.4.0.Beta1: fixed in 2.4.0.Beta1
  • 2.3.0.Alpha1 up to 2.3.21.Final: fixed in 2.3.21.Final
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 33× 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 218 total refreshes for this CVE.

  1. 2026-10-09 20:05 UTCEPSS rescore
  2. 2026-10-08 17:08 UTCEPSS rescore
  3. 2026-10-07 23:46 UTCEPSS rescore
  4. 2026-10-06 15:15 UTCEPSS rescore
  5. 2026-10-05 17:41 UTCEPSS rescore
  6. 2026-10-04 23:20 UTCEPSS rescore
  7. 2026-10-03 14:24 UTCEPSS rescore
  8. 2026-10-01 19:48 UTCEPSS rescore
  9. 2026-09-30 19:48 UTCEG score recompute
  10. 2026-09-30 15:01 UTCEPSS rescore
  11. 2026-09-29 15:17 UTCEPSS rescore
  12. 2026-09-28 13:50 UTCEPSS rescore
  13. 2026-09-27 13:44 UTCEPSS rescore
  14. 2026-09-26 21:23 UTCEG score recompute
  15. 2026-09-26 21:23 UTCVendor advisory
  16. 2026-09-26 15:57 UTCEPSS rescore
  17. 2026-09-24 14:01 UTCEPSS rescore
  18. 2026-09-23 13:46 UTCEPSS rescore
  19. 2026-09-22 14:47 UTCEPSS rescore
  20. 2026-09-21 20:32 UTCEPSS rescore
  21. 2026-09-20 20:14 UTCEPSS rescore
  22. 2026-09-20 20:14 UTCEPSS rescore
  23. 2026-09-19 15:40 UTCEPSS rescore
  24. 2026-09-18 19:26 UTCEPSS rescore
  25. 2026-09-18 19:26 UTCEPSS rescore
Show 75 more
  1. 2026-09-16 14:06 UTCEPSS rescore
  2. 2026-09-16 05:12 UTCEPSS rescore
  3. 2026-09-15 03:08 UTCEPSS rescore
  4. 2026-09-15 03:08 UTCEPSS rescore
  5. 2026-09-13 16:45 UTCEPSS rescore
  6. 2026-09-12 14:59 UTCEPSS rescore
  7. 2026-09-11 14:51 UTCEPSS rescore
  8. 2026-09-11 09:35 UTCEPSS rescore
  9. 2026-09-08 21:58 UTCEPSS rescore
  10. 2026-09-07 16:00 UTCEPSS rescore
  11. 2026-09-06 13:46 UTCEPSS rescore
  12. 2026-09-06 13:46 UTCEPSS rescore
  13. 2026-09-05 15:27 UTCEPSS rescore
  14. 2026-09-04 20:30 UTCVendor advisory
  15. 2026-09-04 20:07 UTCEG score recompute
  16. 2026-09-04 20:07 UTCVendor advisory
  17. 2026-09-04 13:59 UTCEPSS rescore
  18. 2026-09-04 05:05 UTCEPSS rescore
  19. 2026-09-02 14:10 UTCEPSS rescore
  20. 2026-09-01 13:52 UTCEPSS rescore
  21. 2026-08-30 19:16 UTCEPSS rescore
  22. 2026-08-28 21:39 UTCEPSS rescore
  23. 2026-08-27 14:23 UTCEPSS rescore
  24. 2026-08-25 13:47 UTCEPSS rescore
  25. 2026-08-24 14:15 UTCEPSS rescore
  26. 2026-08-23 00:18 UTCEPSS rescore
  27. 2026-08-21 23:47 UTCEPSS rescore
  28. 2026-08-20 22:54 UTCEPSS rescore
  29. 2026-08-19 17:02 UTCEPSS rescore
  30. 2026-08-19 08:21 UTCEG score recompute
  31. 2026-08-19 08:21 UTCVendor advisory
  32. 2026-08-18 13:46 UTCEPSS rescore
  33. 2026-08-17 13:45 UTCEPSS rescore
  34. 2026-08-16 14:54 UTCEPSS rescore
  35. 2026-08-16 02:13 UTCEPSS rescore
  36. 2026-08-15 01:28 UTCEPSS rescore
  37. 2026-08-13 21:59 UTCEPSS rescore
  38. 2026-08-12 13:49 UTCEPSS rescore
  39. 2026-08-11 13:40 UTCEPSS rescore
  40. 2026-08-10 23:58 UTCEPSS rescore
  41. 2026-08-09 13:45 UTCEPSS rescore
  42. 2026-08-08 16:35 UTCEPSS rescore
  43. 2026-08-08 08:43 UTCEG score recompute
  44. 2026-08-08 08:43 UTCVendor advisory
  45. 2026-08-07 16:25 UTCEPSS rescore
  46. 2026-08-06 13:45 UTCEPSS rescore
  47. 2026-08-05 19:16 UTCEPSS rescore
  48. 2026-08-05 17:33 UTCVendor advisory
  49. 2026-08-05 16:53 UTCEG score recompute▲ 7.50
  50. 2026-08-05 16:53 UTCVendor advisory
  51. 2026-08-05 16:50 UTCMITRE cvelistV5CVSS v3 → 7.5 · severity → HIGH
  52. 2026-08-04 22:32 UTCVendor advisory
  53. 2026-08-04 22:31 UTCNVD update
  54. 2026-08-04 21:46 UTCVendor advisory
  55. 2026-08-04 21:40 UTCMITRE cvelistV5
  56. 2026-08-04 15:08 UTCEPSS rescore
  57. 2026-08-04 10:36 UTCEPSS rescore
  58. 2026-08-04 08:19 UTCVendor advisory
  59. 2026-08-04 08:18 UTCNVD update
  60. 2026-08-04 07:32 UTCEG score recompute▼ 7.50
  61. 2026-08-04 07:32 UTCVendor advisory
  62. 2026-08-04 07:28 UTCMITRE cvelistV5
  63. 2026-08-03 10:34 UTCEPSS rescore
  64. 2026-08-02 02:25 UTCEPSS rescore
  65. 2026-08-01 04:14 UTCEPSS rescore
  66. 2026-07-30 16:26 UTCEPSS rescore
  67. 2026-07-30 01:29 UTCEPSS rescore
  68. 2026-07-28 15:34 UTCEPSS rescore
  69. 2026-07-27 16:38 UTCEG score recompute
  70. 2026-07-27 16:38 UTCVendor advisory
  71. 2026-07-27 15:31 UTCEG score recompute
  72. 2026-07-27 15:31 UTCVendor advisory
  73. 2026-07-27 14:11 UTCEPSS rescore
  74. 2026-07-26 14:53 UTCEPSS rescore
  75. 2026-07-26 14:53 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2024-3884?
CVE-2024-3884 is a high vulnerability published on December 3, 2025. 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…
When was CVE-2024-3884 disclosed?
CVE-2024-3884 was first published on December 3, 2025, with the most recent update on September 26, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-3884 actively exploited?
CVE-2024-3884 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.4% probability of exploitation in the next 30 days (70th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2024-3884?
CVE-2024-3884 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2024-3884?
A fix for CVE-2024-3884 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2024-3884 are linked in the Vendor Advisories panel on this page.

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