CVE-2024-3653

MEDIUMNVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 5.3 under NVD CVSS v3. EPSS exploit probability: 1.9% (78th 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: epss, nvd
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 1.9%CVSS: 5.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A vulnerability was found in Undertow. This issue requires enabling the learning-push handler in the server's config, which is disabled by default, leaving the maxAge config in the handler unconfigured. The default is -1, which makes the handler vulnerable. If someone overwrites that config, the server is not subject to the attack. The attacker needs to be able to reach the server with a normal HTTP request.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
40
EG Risk 40/100CISA 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
Severity53% × 45%
Exploitation2% × 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
1.9%
EPSS %ILE
78th
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

July 8, 2024

Last Modified

September 8, 2026

Advisory Details (8)

Auto-updated Aug 4, 2026
Patch available. Sources: redhat.
redhatMentions a patch (unverified)

2274437 – (CVE-2024-3653) CVE-2024-3653 undertow: LearningPushHandler can lead to remote memory DoS attacks

https://bugzilla.redhat.com/show_bug.cgi?id=2274437
redhatMentions a patch (unverified)

CVE-2024-3653 - 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-2024-3653
redhatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2024:6437
redhatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2024:5147
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 9.

https://access.redhat.com/errata/RHSA-2024:5145
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 8.

https://access.redhat.com/errata/RHSA-2024:5144
redhatMentions a patch (unverified)

Affected: Red Hat Enterprise Linux 7.

https://access.redhat.com/errata/RHSA-2024:5143
redhatMentions a patch (unverified)
https://access.redhat.com/errata/RHSA-2024:4392

Vendor Advisories for CVE-2024-3653(6)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(7)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatio.quarkus.http/quarkus-http-core:5.2.4.redhat-000012024-09-23redhat
redhatio.undertow/undertow-core:2.2.33.SP1-redhat-000012024-08-08redhat
redhateap7-undertow-0:2.2.33-1.SP1_redhat_00001.1.el8eap2024-08-08redhat
redhateap7-undertow-0:2.2.33-1.SP1_redhat_00001.1.el9eap2024-08-08redhat
redhateap7-undertow-0:2.2.33-1.SP1_redhat_00001.1.el7eap2024-08-08redhat
redhatundertow2024-07-08redhat
debian:13undertow @ 2.3.18-1 (fixes >=0)—osv

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 (53 versions)
  • every version up to 2.3.18-1: fixed in 2.3.18-1
—
Maven(1)
PackageVulnerable rangeFix by version rangeDependents
io.undertow:undertow-core1.0.0.Alpha1 ... 2.2.9.Final (302 versions)
  • 2.3.0.Alpha1 up to 2.3.15.Final: fixed in 2.3.15.Final
  • every version up to 2.2.34.Final: fixed in 2.2.34.Final
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 32× 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 202 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 19:46 UTCEG score recompute
  10. 2026-09-30 15:01 UTCEPSS rescore
  11. 2026-09-29 15:17 UTCEPSS rescore
  12. 2026-09-28 18:42 UTCOSV refresh
  13. 2026-09-28 13:50 UTCEPSS rescore
  14. 2026-09-27 13:44 UTCEPSS rescore
  15. 2026-09-26 15:57 UTCEPSS rescore
  16. 2026-09-24 14:01 UTCEPSS rescore
  17. 2026-09-23 13:46 UTCEPSS rescore
  18. 2026-09-22 14:47 UTCEPSS rescore
  19. 2026-09-21 20:32 UTCEPSS rescore
  20. 2026-09-20 20:14 UTCEPSS rescore
  21. 2026-09-20 20:14 UTCEPSS rescore
  22. 2026-09-19 15:40 UTCEPSS rescore
  23. 2026-09-18 19:26 UTCEPSS rescore
  24. 2026-09-18 19:26 UTCEPSS rescore
  25. 2026-09-16 14:06 UTCEPSS rescore
Show 75 more
  1. 2026-09-16 05:12 UTCEPSS rescore
  2. 2026-09-15 03:08 UTCEPSS rescore
  3. 2026-09-15 03:08 UTCEPSS rescore
  4. 2026-09-13 16:45 UTCEPSS rescore
  5. 2026-09-12 14:59 UTCEPSS rescore
  6. 2026-09-11 14:51 UTCEPSS rescore
  7. 2026-09-11 09:35 UTCEPSS rescore
  8. 2026-09-08 23:21 UTCVendor advisory
  9. 2026-09-08 23:13 UTCVendor advisory
  10. 2026-09-08 23:03 UTCEG score recompute
  11. 2026-09-08 23:03 UTCVendor advisory
  12. 2026-09-08 21:58 UTCEPSS rescore
  13. 2026-09-07 16:00 UTCEPSS rescore
  14. 2026-09-06 19:13 UTCOSV refresh
  15. 2026-09-06 13:46 UTCEPSS rescore
  16. 2026-09-06 13:46 UTCEPSS rescore
  17. 2026-09-05 15:27 UTCEPSS rescore
  18. 2026-09-04 13:59 UTCEPSS rescore
  19. 2026-09-04 05:05 UTCEPSS rescore
  20. 2026-09-02 14:10 UTCEPSS rescore
  21. 2026-09-01 13:52 UTCEPSS rescore
  22. 2026-08-30 19:16 UTCEPSS rescore
  23. 2026-08-28 21:39 UTCEPSS rescore
  24. 2026-08-27 14:23 UTCEPSS rescore
  25. 2026-08-25 13:47 UTCEPSS rescore
  26. 2026-08-24 14:15 UTCEPSS rescore
  27. 2026-08-23 00:18 UTCEPSS rescore
  28. 2026-08-21 23:47 UTCEPSS rescore
  29. 2026-08-20 22:54 UTCEPSS rescore
  30. 2026-08-20 05:15 UTCOSV refresh
  31. 2026-08-19 17:02 UTCEPSS rescore
  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. 2026-08-07 16:25 UTCEPSS rescore
  44. 2026-08-06 13:45 UTCEPSS rescore
  45. 2026-08-05 19:16 UTCEPSS rescore
  46. 2026-08-05 00:22 UTCVendor advisory
  47. 2026-08-04 23:21 UTCEG score recompute
  48. 2026-08-04 23:21 UTCVendor advisory
  49. 2026-08-04 15:08 UTCEPSS rescore
  50. 2026-08-04 10:36 UTCEPSS rescore
  51. 2026-08-03 10:34 UTCEPSS rescore
  52. 2026-08-02 02:25 UTCEPSS rescore
  53. 2026-08-01 04:14 UTCEPSS rescore
  54. 2026-07-30 16:26 UTCEPSS rescore
  55. 2026-07-30 01:29 UTCEPSS rescore
  56. 2026-07-28 15:34 UTCEPSS rescore
  57. 2026-07-28 11:50 UTCOSV refresh
  58. 2026-07-27 14:11 UTCEPSS rescore
  59. 2026-07-26 14:53 UTCEPSS rescore
  60. 2026-07-26 14:53 UTCEPSS rescore
  61. 2026-07-25 14:16 UTCEPSS rescore
  62. 2026-07-24 14:16 UTCEPSS rescore
  63. 2026-07-23 14:17 UTCEPSS rescore
  64. 2026-07-23 02:37 UTCEG score recompute
  65. 2026-07-22 14:07 UTCEPSS rescore
  66. 2026-07-21 15:23 UTCEPSS rescore
  67. 2026-07-21 15:23 UTCEPSS rescore
  68. 2026-07-20 17:06 UTCEPSS rescore
  69. 2026-07-19 14:30 UTCEPSS rescore
  70. 2026-07-19 14:30 UTCEPSS rescore
  71. 2026-07-19 02:28 UTCEPSS rescore
  72. 2026-07-19 02:28 UTCEPSS rescore
  73. 2026-07-18 10:03 UTCEPSS rescore
  74. 2026-07-18 10:03 UTCEPSS rescore
  75. 2026-07-16 17:02 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2024-3653?
CVE-2024-3653 is a medium vulnerability published on July 8, 2024. A vulnerability was found in Undertow. This issue requires enabling the learning-push handler in the server's config, which is disabled by default, leaving the maxAge config in the handler unconfigured. The default is -1, which makes the handler vulnerable. If someone overwrites that config, the…
When was CVE-2024-3653 disclosed?
CVE-2024-3653 was first published on July 8, 2024, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2024-3653 actively exploited?
CVE-2024-3653 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1.9% probability of exploitation in the next 30 days (78th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2024-3653?
CVE-2024-3653 has a CVSS v3 base score of 5.3 (NVD).
How do I remediate CVE-2024-3653?
A fix for CVE-2024-3653 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2024-3653 are linked in the Vendor Advisories panel on this page.

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