CVE-2026-44893

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: 0.6%, top 52% 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
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.9%CVSS: 7.5Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Netty is a network application framework for development of protocol servers and clients. In netty-codec-haproxy prior to versions 4.1.135.Final and 4.2.15.Final, when decoding a PP2_TYPE_SSL TLV, HAProxyMessage.readNextTLV() first calls header.retainedSlice(header.readerIndex(), length) and only then reads the 1-byte client field and 4-byte verify field. If the attacker sets the TLV length below 5, the subsequent readByte/readInt throws IndexOutOfBoundsException. HAProxyMessageDecoder only catches HAProxyProtocolException around this call, so the IOOBE propagates and the retained slice on the pooled cumulation buffer is never released. Versions 4.1.135.Final and 4.2.15.Final patch the issue.

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

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%
EPSS PROB
0.9%
EPSS %ILE
57th
KEV
Not listed

Published

June 8, 2026

Last Modified

September 18, 2026

Advisory Details (3)

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

HAProxy SSL TLV parsing leaks retained slice on invalid TLV length · Advisory · netty/netty · GitHub

https://github.com/netty/netty/security/advisories/GHSA-cc37-9q2j-3hfv
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
github_release Patch Available

netty-4.1.135.Final

Patch available: netty/netty netty-4.1.135.Final

https://github.com/netty/netty/releases/tag/netty-4.1.135.Final

Vendor Advisories for CVE-2026-44893(17)

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
redhatnetty-codec-haproxy2026-09-10redhat
redhatrhoai/odh-trustyai-service-rhel9:17881986812026-09-08redhat
redhateap7-wildfly-0:7.4.25-2.GA_redhat_00001.1.el7eap2026-08-11redhat
redhateap7-wildfly-0:7.4.25-2.GA_redhat_00001.1.el9eap2026-08-11redhat
redhateap7-wildfly-0:7.4.25-2.GA_redhat_00001.1.el8eap2026-08-11redhat
redhatcryostat/jfr-datasource-rhel9:4.2.0-132026-07-29redhat
redhatdevspaces/multicluster-redirector-rhel9:17829890272026-07-08redhat

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

(5 across 5 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
netty1:4.1.48-10 ... 1:4.1.48-9 (16 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
netty1:4.1.48-10 ... 1:4.1.48-9 (12 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
netty1:4.1.48-10 ... 1:4.1.48-16 (8 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
netty1:4.1.48-10 ... 1:4.1.48-16 (7 versions)
  • every version on: no fix on record
—
Maven(1)
PackageVulnerable rangeFix by version rangeDependents
io.netty:netty-codec-haproxy4.0.29.Final ... 4.1.99.Final (178 versions)
  • 4.2.0.Final up to 4.2.15.Final: fixed in 4.2.15.Final
  • every version up to 4.1.135.Final: fixed in 4.1.135.Final
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 3× 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 255 total refreshes for this CVE.

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

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-44893?
CVE-2026-44893 is a high vulnerability published on June 8, 2026. Netty is a network application framework for development of protocol servers and clients. In netty-codec-haproxy prior to versions 4.1.135.Final and 4.2.15.Final, when decoding a PP2TYPESSL TLV, HAProxyMessage.readNextTLV() first calls header.retainedSlice(header.readerIndex(), length) and only…
When was CVE-2026-44893 disclosed?
CVE-2026-44893 was first published on June 8, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-44893 actively exploited?
CVE-2026-44893 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.9% probability of exploitation in the next 30 days (57th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-44893?
CVE-2026-44893 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-44893?
A fix for CVE-2026-44893 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-44893 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-44893

Explore →

Is Your Infrastructure Affected by CVE-2026-44893?

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

Book a Demo →Browse All CVEs