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CVE-2026-44890

Netty is a network application framework for…

Netty is a network application framework for development of protocol servers and clients. In netty-codec-redis prior to versions 4.1.135.Final and 4.2.15.Final, an attacker can cause DoS by sending crafted Redis payloads across multiple connections without `\r\n`. This exhausts the server's direct memory pool (OutOfDirectMemoryError), preventing legitimate connections from being processed. Versions 4.1.135.Final and 4.2.15.Final patch the issue.

Gravedad: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published: Jun 7, 2026, 10:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.46% · Oct 27, 2026

Projects and upstream resources

[netty][Source-reported homepage]

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Distribution / release	Package	Version	Status	Source
Debiantrixie-security	netty	`1:4.1.48-10+deb13u1`	Affected	[CVE-2026-44890]
Debiantrixie	netty	Not reported	AffectedDistribution reports no fix	[CVE-2026-44890]
Debiantrixie	netty	`1:4.1.48-10+deb13u1`	Affected	[CVE-2026-44890]
Debiansid	netty	Not reported	AffectedDistribution reports no fix	[CVE-2026-44890]
Debiansid	netty	`1:4.1.48-16`	Affected	[CVE-2026-44890]
Debianforky	netty	Not reported	AffectedDistribution reports no fix	[CVE-2026-44890]
Debianforky	netty	`1:4.1.48-16`	Affected	[CVE-2026-44890]
Debianbookworm-security	netty	`1:4.1.48-7+deb12u2`	Affected	[CVE-2026-44890]
Debianbookworm	netty	Not reported	AffectedDistribution reports no fix	[CVE-2026-44890]
Debianbookworm	netty	`1:4.1.48-7+deb12u2`	Affected	[CVE-2026-44890]
UnknownRelease not reported	netty	Not reported	UnknownSource applicability is not established	Provider not reported
UnknownRelease not reported	netty	`4.1.135`	UnknownSource applicability is not established	Provider not reported

Showing 12 observations. All 13 observations, including unknown and conflicting reports, are available below.

Provider details and historical evidence

Distribution / release	Package	Version	Status	Source
UnknownRelease not reported	netty	Not reported	UnknownSource applicability is not established	Provider not reported
UnknownRelease not reported	netty	`4.1.135`	UnknownSource applicability is not established	Provider not reported
UnknownRelease not reported	netty	`4.2.15`	UnknownSource applicability is not established	Provider not reported
Debianbookworm	netty	Not reported	AffectedDistribution reports no fix	[CVE-2026-44890]
Debianbookworm	netty	`1:4.1.48-7+deb12u2`	Affected	[CVE-2026-44890]
Debianbookworm-security	netty	`1:4.1.48-7+deb12u2`	Affected	[CVE-2026-44890]
Debianforky	netty	Not reported	AffectedDistribution reports no fix	[CVE-2026-44890]
Debianforky	netty	`1:4.1.48-16`	Affected	[CVE-2026-44890]
Debiansid	netty	Not reported	AffectedDistribution reports no fix	[CVE-2026-44890]
Debiansid	netty	`1:4.1.48-16`	Affected	[CVE-2026-44890]
Debiantrixie	netty	Not reported	AffectedDistribution reports no fix	[CVE-2026-44890]
Debiantrixie	netty	`1:4.1.48-10+deb13u1`	Affected	[CVE-2026-44890]
Debiantrixie-security	netty	`1:4.1.48-10+deb13u1`	Affected	[CVE-2026-44890]

Original provider fields

{
  "package_releases": [
    {
      "name": "netty",
      "status": "vulnerable",
      "release": "sid",
      "version": "1:4.1.48-16"
    },
    {
      "name": "netty",
      "status": "vulnerable",
      "release": "forky",
      "version": "1:4.1.48-16"
    },
    {
      "name": "netty",
      "status": "vulnerable",
      "release": "trixie",
      "version": "1:4.1.48-10+deb13u1"
    },
    {
      "name": "netty",
      "status": "vulnerable",
      "release": "trixie-security",
      "version": "1:4.1.48-10+deb13u1"
    },
    {
      "name": "netty",
      "status": "vulnerable",
      "release": "bookworm",
      "version": "1:4.1.48-7+deb12u2"
    },
    {
      "name": "netty",
      "status": "vulnerable",
      "release": "bookworm-security",
      "version": "1:4.1.48-7+deb12u2"
    }
  ],
  "fixed_versions": [
    {
      "bug": 1139807,
      "name": "netty",
      "type": "source",
      "origin": null,
      "release": "sid",
      "urgency": "not yet assigned",
      "fixed_version": ""
    },
    {
      "bug": 1139807,
      "name": "netty",
      "type": "source",
      "origin": null,
      "release": "forky",
      "urgency": "not yet assigned",
      "fixed_version": ""
    },
    {
      "bug": 1139807,
      "name": "netty",
      "type": "source",
      "origin": null,
      "release": "trixie",
      "urgency": "not yet assigned",
      "fixed_version": ""
    },
    {
      "bug": 1139807,
      "name": "netty",
      "type": "source",
      "origin": null,
      "release": "bookworm",
      "urgency": "not yet assigned",
      "fixed_version": ""
    }
  ],
  "distribution_packages": [
    {
      "name": "netty",
      "fixed_version": "not yet fixed",
      "applicability_unknown": true
    },
    {
      "name": "netty",
      "fixed_version": "4.1.135",
      "applicability_unknown": true
    },
    {
      "name": "netty",
      "fixed_version": "4.2.15",
      "applicability_unknown": true
    },
    {
      "name": "netty",
      "ranges": [
        {
          "fixed": "4.2.15",
          "introduced": "4.2.0",
          "last_affected": "",
          "start_excluding": ""
        }
      ],
      "ecosystem": "cpe",
      "provider_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-44890",
      "fixed_version": "4.2.15",
      "provider_source": "nvd",
      "provider_record_id": "NVD-CVE-2026-44890",
      "provider_updated_at": "2026-09-18T13:18:24.623"
    }
  ]
}

[Debian bug #1139807]

OpenFactory catalog packages

La asociación de paquetes está en curso.

[Debian 12 (Bookworm)]

[libnetty-java]Desconocido
Paquete fuente: [netty]
Detalles (4)
- 1:4.1.48-7+deb12u2 · all · bookworm
  Afectada
  nvd · netty · debian · bookworm; nvd · netty · debian · 12
- 1:4.1.48-7+deb12u2 · all · bookworm
  Afectada
  nvd · netty · debian · bookworm; nvd · netty · debian · 12
- 1:4.1.48-7+deb12u2 · all · bookworm-security
  Afectada
  nvd · netty · debian · bookworm; nvd · netty · debian · 12
- 1:4.1.48-7+deb12u2 · all · bookworm-security
  Afectada
  nvd · netty · debian · bookworm; nvd · netty · debian · 12

[Debian 13 (Trixie)]

[libnetty-java]Desconocido
Paquete fuente: [netty]
Detalles (4)
- 1:4.1.48-10+deb13u1 · all · trixie
  Afectada
  nvd · netty · debian · 13
- 1:4.1.48-10+deb13u1 · all · trixie
  Afectada
  nvd · netty · debian · 13
- 1:4.1.48-10+deb13u1 · all · trixie-security
  Afectada
  nvd · netty · debian · 13
- 1:4.1.48-10+deb13u1 · all · trixie-security
  Afectada
  nvd · netty · debian · 13

Observado: Oct 27, 2026, 7:16:01 AM UTC

Referencias

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]