CVE-2026-44892

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 80% 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).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, the default configuration of the Http3ConnectionHandler in the Netty HTTP/3 codec lacks an enforced maximum header size limit. When a peer does not explicitly specify HTTP3_SETTINGS_MAX_FIELD_SECTION_SIZE, the implementation defaults to an unbounded limit. This insecure default configuration allows a malicious client or server to send an enormous number of headers, leading to a memory exhaustion Denial of Service via an OutOfMemoryError. Version 4.2.15.Final contains a patch.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
19.7%
KEV
Not listed

Published

June 8, 2026

Last Modified

June 15, 2026

Advisory Details (2)

Auto-updated Jun 12, 2026
Patch available. Sources: github_release, github.
github Patch Available

Vulnerable Default Configuration: Denial of Service via Unbounded HTTP/3 Header Size · Advisory · netty/netty · GitHub

https://github.com/netty/netty/security/advisories/GHSA-c2rx-5r8w-8xr2
github_release Patch Available

netty-4.2.15.Final

Patch available: netty/netty netty-4.2.15.Final

https://github.com/netty/netty/releases/tag/netty-4.2.15.Final

Vendor Advisories for CVE-2026-44892(1)

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

Affected Packages

(1 across 1 ecosystem)
Maven(1)
PackageVulnerable rangeFixed inDependents
io.netty:netty-codec-http34.2.10.Final ... 4.2.9.Final (13 versions)4.2.15.Final—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 85× 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.

  1. 2026-07-06 16:27 UTCEPSS rescore
  2. 2026-07-06 02:23 UTCEPSS rescore
  3. 2026-07-05 17:25 UTCEG score recompute
  4. 2026-07-05 03:29 UTCEG score recompute
  5. 2026-07-05 02:30 UTCEPSS rescore
  6. 2026-07-04 14:50 UTCEG score recompute
  7. 2026-07-04 06:31 UTCEPSS rescore
  8. 2026-07-03 16:12 UTCEG score recompute
  9. 2026-07-03 03:18 UTCEG score recompute
  10. 2026-07-02 16:18 UTCEG score recompute
  11. 2026-07-02 05:11 UTCEG score recompute
  12. 2026-07-01 18:07 UTCEG score recompute
  13. 2026-07-01 15:07 UTCEPSS rescore
  14. 2026-07-01 06:31 UTCEG score recompute
  15. 2026-06-30 23:22 UTCEPSS rescore
  16. 2026-06-30 17:54 UTCEG score recompute
  17. 2026-06-30 06:14 UTCEG score recompute
  18. 2026-06-29 19:16 UTCEG score recompute
  19. 2026-06-29 14:06 UTCEPSS rescore
  20. 2026-06-29 14:06 UTCEPSS rescore
  21. 2026-06-29 07:31 UTCEG score recompute
  22. 2026-06-28 19:40 UTCEG score recompute
  23. 2026-06-28 14:07 UTCEPSS rescore
  24. 2026-06-28 08:42 UTCEG score recompute
  25. 2026-06-28 04:56 UTCEPSS rescore
Show 60 more
  1. 2026-06-28 04:56 UTCEPSS rescore
  2. 2026-06-27 21:44 UTCEG score recompute
  3. 2026-06-27 10:46 UTCEG score recompute
  4. 2026-06-27 03:08 UTCEPSS rescore
  5. 2026-06-26 23:49 UTCEG score recompute
  6. 2026-06-26 12:46 UTCEG score recompute
  7. 2026-06-25 23:10 UTCEG score recompute
  8. 2026-06-25 13:49 UTCEPSS rescore
  9. 2026-06-25 13:49 UTCEPSS rescore
  10. 2026-06-25 12:12 UTCEG score recompute
  11. 2026-06-25 01:08 UTCEG score recompute
  12. 2026-06-24 14:11 UTCEG score recompute
  13. 2026-06-24 14:05 UTCEPSS rescore
  14. 2026-06-24 02:55 UTCEG score recompute
  15. 2026-06-23 21:33 UTCEPSS rescore
  16. 2026-06-23 15:54 UTCEG score recompute
  17. 2026-06-22 22:44 UTCEG score recompute
  18. 2026-06-22 14:25 UTCEPSS rescore
  19. 2026-06-22 14:25 UTCEPSS rescore
  20. 2026-06-22 05:41 UTCEG score recompute
  21. 2026-06-21 14:56 UTCEPSS rescore
  22. 2026-06-21 14:56 UTCEPSS rescore
  23. 2026-06-21 10:57 UTCEG score recompute
  24. 2026-06-21 01:59 UTCEPSS rescore
  25. 2026-06-20 21:50 UTCEG score recompute
  26. 2026-06-20 10:13 UTCEG score recompute
  27. 2026-06-19 23:13 UTCEG score recompute
  28. 2026-06-19 19:25 UTCEPSS rescore
  29. 2026-06-19 09:58 UTCEG score recompute
  30. 2026-06-18 21:13 UTCEG score recompute
  31. 2026-06-18 17:52 UTCEPSS rescore
  32. 2026-06-18 17:52 UTCEPSS rescore
  33. 2026-06-18 10:12 UTCEG score recompute
  34. 2026-06-17 23:14 UTCEG score recompute
  35. 2026-06-17 17:53 UTCEPSS rescore
  36. 2026-06-17 12:15 UTCEG score recompute
  37. 2026-06-17 01:14 UTCEG score recompute
  38. 2026-06-16 17:52 UTCEPSS rescore
  39. 2026-06-16 14:16 UTCEG score recompute
  40. 2026-06-16 03:18 UTCEG score recompute
  41. 2026-06-15 17:49 UTCEPSS rescore
  42. 2026-06-15 16:19 UTCEG score recompute
  43. 2026-06-15 05:13 UTCEG score recompute
  44. 2026-06-14 18:14 UTCEG score recompute
  45. 2026-06-14 07:16 UTCEG score recompute
  46. 2026-06-13 23:00 UTCEPSS rescore
  47. 2026-06-13 20:18 UTCEG score recompute
  48. 2026-06-13 09:19 UTCEG score recompute
  49. 2026-06-12 23:12 UTCEPSS rescore
  50. 2026-06-12 23:12 UTCEPSS rescore
  51. 2026-06-12 22:21 UTCEG score recompute
  52. 2026-06-12 11:23 UTCEG score recompute
  53. 2026-06-12 00:26 UTCEG score recompute
  54. 2026-06-11 13:28 UTCEG score recompute
  55. 2026-06-11 02:30 UTCEG score recompute
  56. 2026-06-10 15:33 UTCEG score recompute
  57. 2026-06-10 04:35 UTCEG score recompute
  58. 2026-06-09 17:37 UTCEG score recompute
  59. 2026-06-09 06:40 UTCEG score recompute
  60. 2026-06-08 19:42 UTCEG score recompute

Frequently asked(5)

What is CVE-2026-44892?
CVE-2026-44892 is a high vulnerability published on June 8, 2026. Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, the default configuration of the Http3ConnectionHandler in the Netty HTTP/3 codec lacks an enforced maximum header size limit. When a peer does not explicitly specify…
When was CVE-2026-44892 disclosed?
CVE-2026-44892 was first published in the National Vulnerability Database on June 8, 2026, with the most recent update on June 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44892 actively exploited?
CVE-2026-44892 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 19.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-44892?
CVE-2026-44892 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-44892?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-44892, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-44892

Explore →

Is Your Infrastructure Affected by CVE-2026-44892?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs