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Vulnerability Database · Maven · Package report

io.netty:netty-codec-http: vulnerability history, versions and safety

io.netty:netty-codec-http is a package in the Maven ecosystem. Vulert records 24 vulnerabilities for it across 110 releases, from Feb 2020 to Aug 2026. Each vulnerability names the versions it affects, the fixed version to move to, and a workaround where no fix has been published.

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24 vulnerabilities recorded C1 H7 M16
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0 with no fix published

Every vulnerability has a patched version to move to.

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17 in the last 12 months

Most recent disclosure 17 Aug 2026.

See the disclosure history →
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0 malicious-package vulnerabilities

No published version shipped hostile code.

See all io.netty:netty-codec-http vulnerabilities

Vulert verdict on io.netty:netty-codec-http 5.0.0.Alpha2 i

Updated on 23 Oct 2026

Good news: 5.0.0.Alpha2, the version you would install today, has no known vulnerabilities. Older releases do — the table below lists all 24.

Package health score 53/100
  • Security Unfixed issues
  • Maintenance Slowing
  • Popularity Widely used
  • Community Active

What to do: Stay on 5.0.0.Alpha2 or newer. This can change: a vulnerability disclosed tomorrow can affect 5.0.0.Alpha2 too — Vulert watches the package and alerts you if that happens. Monitor it with Vulert →

  • Current release 5.0.0.Alpha2 — unaffected i
  • Vulnerabilities on record 24 over 6 years · 17 in the last year i
  • Latest disclosure 17 Aug 2026 i
  • Highest CVSS 9.1 i
  • With no published fix 0 i
  • Depended on by 29 packages i
  • Stars 35,061 i
  • OpenSSF scorecard 7/10 i
  • Last release 139 months ago i
  • Licence Apache-2.0 i

Version list, release dates, licence and dependants published by Maven Central, refreshed 22 Oct 2026. Licence information is not legal advice.

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01 Versions

Which versions are affected

Every version Vulert tracks for io.netty:netty-codec-http, newest first, with the vulnerabilities recorded against each one. A version showing none has no vulnerability in the Vulert database — open it for the full picture on that release.

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Version Released Vulert vulnerabilities Licence Fix published Details
4.1.139.Final 06 Oct 2026 none Apache-2.0 — Details →
4.2.19.Final 06 Oct 2026 none Apache-2.0 — Details →
4.1.138.Final 09 Sep 2026 none Apache-2.0 — Details →
4.2.18.Final 09 Sep 2026 none Apache-2.0 — Details →
4.1.137.Final 06 Aug 2026 none Apache-2.0 — Details →
4.2.17.Final 04 Aug 2026 none Apache-2.0 — Details →
4.1.136.Final 08 Jul 2026 none Apache-2.0 — Details →
4.2.16.Final 07 Jul 2026 M1 Apache-2.0 Yes Details →
4.1.135.Final 02 Jun 2026 none Apache-2.0 — Details →
4.2.15.Final 02 Jun 2026 H3 M5 Apache-2.0 Yes Details →
4.1.134.Final 20 May 2026 none Apache-2.0 — Details →
4.2.14.Final 20 May 2026 H3 M6 Apache-2.0 Yes Details →
4.1.133.Final 05 May 2026 none Apache-2.0 — Details →
4.2.13.Final 04 May 2026 H3 M6 Apache-2.0 Yes Details →
4.2.12.Final 25 Mar 2026 H5 M9 Apache-2.0 Yes Details →
4.1.132.Final 24 Mar 2026 M1 Apache-2.0 Yes Details →
4.2.11.Final 24 Mar 2026 H5 M9 Apache-2.0 Yes Details →
4.1.131.Final 05 Feb 2026 H1 M1 Apache-2.0 Yes Details →
4.2.10.Final 05 Feb 2026 H5 M9 Apache-2.0 Yes Details →
4.2.9.Final 15 Dec 2025 H5 M9 Apache-2.0 Yes Details →
4.1.130.Final 15 Dec 2025 H1 M1 Apache-2.0 Yes Details →
4.2.8.Final 11 Dec 2025 H5 M9 Apache-2.0 Yes Details →
4.1.129.Final 11 Dec 2025 H1 M1 Apache-2.0 Yes Details →
4.1.128.Final 14 Oct 2025 H1 M1 Apache-2.0 Yes Details →
4.2.7.Final 14 Oct 2025 H5 M10 Apache-2.0 Yes Details →
4.2.6.Final 08 Sep 2025 H5 M10 Apache-2.0 Yes Details →
4.1.127.Final 08 Sep 2025 H1 M1 Apache-2.0 Yes Details →
4.2.5.Final 03 Sep 2025 H5 M10 Apache-2.0 Yes Details →
4.1.126.Final 03 Sep 2025 H1 M1 Apache-2.0 Yes Details →
4.1.125.Final 03 Sep 2025 H1 M1 Apache-2.0 Yes Details →
4.2.4.Final 13 Aug 2025 H5 M10 Apache-2.0 Yes Details →
4.1.124.Final 13 Aug 2025 H2 M1 Apache-2.0 Yes Details →
4.1.123.Final 15 Jul 2025 H2 M1 Apache-2.0 Yes Details →
4.2.3.Final 14 Jul 2025 H5 M10 Apache-2.0 Yes Details →
4.2.2.Final 05 Jun 2025 H5 M10 Apache-2.0 Yes Details →
4.1.122.Final 03 Jun 2025 H2 M1 Apache-2.0 Yes Details →
4.2.1.Final 06 May 2025 H5 M10 Apache-2.0 Yes Details →
4.1.121.Final 24 Apr 2025 H2 M1 Apache-2.0 Yes Details →
4.1.120.Final 23 Apr 2025 H2 M1 Apache-2.0 Yes Details →
4.2.0.Final 03 Apr 2025 H5 M10 Apache-2.0 Yes Details →
4.2.0.RC4 08 Mar 2025 H2 M4 Apache-2.0 Yes Details →
4.1.119.Final 26 Feb 2025 H2 M1 Apache-2.0 Yes Details →
4.2.0.RC3 11 Feb 2025 H2 M4 Apache-2.0 Yes Details →
4.1.118.Final 10 Feb 2025 H2 M1 Apache-2.0 Yes Details →
4.2.0.RC2 20 Jan 2025 H2 M4 Apache-2.0 Yes Details →
4.1.117.Final 14 Jan 2025 H2 M1 Apache-2.0 Yes Details →
4.1.116.Final 17 Dec 2024 H2 M1 Apache-2.0 Yes Details →
4.2.0.RC1 10 Dec 2024 H2 M4 Apache-2.0 Yes Details →
4.1.115.Final 12 Nov 2024 H2 M1 Apache-2.0 Yes Details →
4.2.0.Beta1 04 Nov 2024 H2 M4 Apache-2.0 Yes Details →
4.2.0.Alpha5 09 Oct 2024 H2 M4 Apache-2.0 Yes Details →
4.1.114.Final 01 Oct 2024 H2 M1 Apache-2.0 Yes Details →
4.2.0.Alpha4 05 Sep 2024 H2 M4 Apache-2.0 Yes Details →
4.1.113.Final 04 Sep 2024 H2 M1 Apache-2.0 Yes Details →
4.2.0.Alpha3 26 Aug 2024 H2 M4 Apache-2.0 Yes Details →
4.1.112.Final 19 Jul 2024 H2 M1 Apache-2.0 Yes Details →
4.2.0.Alpha2 03 Jul 2024 H2 M4 Apache-2.0 Yes Details →
4.2.0.Alpha1 12 Jun 2024 H2 M4 Apache-2.0 Yes Details →
4.1.111.Final 11 Jun 2024 H2 M1 Apache-2.0 Yes Details →
4.1.110.Final 22 May 2024 H2 M1 Apache-2.0 Yes Details →
4.1.109.Final 15 Apr 2024 H2 M1 Apache-2.0 Yes Details →
4.1.108.Final 21 Mar 2024 H2 M1 Apache-2.0 Yes Details →
4.1.107.Final 13 Feb 2024 H2 M2 Apache-2.0 Yes Details →
4.1.106.Final 19 Jan 2024 H2 M2 Apache-2.0 Yes Details →
4.1.105.Final 16 Jan 2024 H2 M2 Apache-2.0 Yes Details →
4.1.104.Final 15 Dec 2023 H2 M2 Apache-2.0 Yes Details →
4.1.103.Final 13 Dec 2023 H2 M2 Apache-2.0 Yes Details →
4.1.102.Final 12 Dec 2023 H2 M2 Apache-2.0 Yes Details →
4.1.101.Final 09 Nov 2023 H2 M2 Apache-2.0 Yes Details →
4.1.100.Final 10 Oct 2023 H2 M2 Apache-2.0 Yes Details →
4.1.99.Final 28 Sep 2023 H2 M2 Apache-2.0 Yes Details →
4.1.98.Final 21 Sep 2023 H2 M2 Apache-2.0 Yes Details →
4.1.97.Final 23 Aug 2023 H2 M2 Apache-2.0 Yes Details →
4.1.96.Final 27 Jul 2023 H2 M2 Apache-2.0 Yes Details →
4.1.95.Final 20 Jul 2023 H2 M2 Apache-2.0 Yes Details →
4.1.94.Final 20 Jun 2023 H2 M2 Apache-2.0 Yes Details →
4.1.93.Final 25 May 2023 H2 M2 Apache-2.0 Yes Details →
4.1.92.Final 25 Apr 2023 H2 M2 Apache-2.0 Yes Details →
4.1.91.Final 03 Apr 2023 H2 M2 Apache-2.0 Yes Details →
4.1.90.Final 14 Mar 2023 H2 M2 Apache-2.0 Yes Details →
4.1.89.Final 13 Feb 2023 H2 M2 Apache-2.0 Yes Details →
4.1.88.Final 12 Feb 2023 H2 M2 Apache-2.0 Yes Details →
4.1.87.Final 12 Jan 2023 H2 M2 Apache-2.0 Yes Details →
4.1.86.Final 12 Dec 2022 H2 M2 Apache-2.0 Yes Details →
4.1.85.Final 09 Nov 2022 H2 M3 Apache-2.0 Yes Details →
4.1.84.Final 12 Oct 2022 H2 M3 Apache-2.0 Yes Details →
4.1.83.Final 11 Oct 2022 H2 M3 Apache-2.0 Yes Details →
4.1.82.Final 13 Sep 2022 H2 M2 Apache-2.0 Yes Details →
4.1.81.Final 08 Sep 2022 H2 M2 Apache-2.0 Yes Details →
4.1.80.Final 26 Aug 2022 H2 M2 Apache-2.0 Yes Details →
4.1.79.Final 11 Jul 2022 H2 M2 Apache-2.0 Yes Details →
4.1.78.Final 14 Jun 2022 H2 M2 Apache-2.0 Yes Details →
4.1.77.Final 06 May 2022 H2 M2 Apache-2.0 Yes Details →
4.1.76.Final 12 Apr 2022 H2 M3 Apache-2.0 Yes Details →
4.1.75.Final 10 Mar 2022 H2 M3 Apache-2.0 Yes Details →
4.1.74.Final 08 Feb 2022 H2 M3 Apache-2.0 Yes Details →
4.1.73.Final 12 Jan 2022 H2 M3 Apache-2.0 Yes Details →
4.1.72.Final 13 Dec 2021 H2 M3 Apache-2.0 Yes Details →
4.1.71.Final 09 Dec 2021 H2 M3 Apache-2.0 Yes Details →
4.1.70.Final 03 Nov 2021 H2 M4 Apache-2.0 Yes Details →
4.1.69.Final 11 Oct 2021 H2 M4 — Yes Details →
4.1.68.Final 09 Sep 2021 H2 M4 — Yes Details →
4.1.67.Final 16 Aug 2021 H2 M4 — Yes Details →
4.1.66.Final 16 Jul 2021 H2 M4 — Yes Details →
4.1.65.Final 19 May 2021 H2 M4 — Yes Details →
4.1.64.Final 17 May 2021 H2 M4 — Yes Details →
4.1.63.Final 01 Apr 2021 H2 M4 — Yes Details →
4.1.62.Final 30 Mar 2021 H2 M4 — Yes Details →
4.1.61.Final 30 Mar 2021 H2 M4 — Yes Details →
4.1.60.Final 09 Mar 2021 H2 M4 — Yes Details →
4.1.59.Final 08 Feb 2021 H2 M4 — Yes Details →
4.1.58.Final 13 Jan 2021 H2 M5 — Yes Details →
4.1.57.Final 12 Jan 2021 H2 M5 — Yes Details →
4.1.56.Final 17 Dec 2020 H2 M5 — Yes Details →
4.1.55.Final 08 Dec 2020 H2 M5 — Yes Details →
4.1.54.Final 11 Nov 2020 H2 M5 — Yes Details →
4.1.53.Final 13 Oct 2020 H2 M5 — Yes Details →
4.1.52.Final 08 Sep 2020 H2 M5 — Yes Details →
4.1.51.Final 09 Jul 2020 H2 M5 — Yes Details →
4.1.50.Final 13 May 2020 H2 M5 — Yes Details →

The newest 120 of 265 versions Vulert tracks. Severity counts are the vulnerabilities recorded against that exact release.

02 Disclosure history

How often vulnerabilities are recorded

  • 2020 1
  • 2021 2
  • 2022 2
  • 2024 1
  • 2025 2
  • 2026 16

Counted by the year Vulert recorded each vulnerability — the same date the table below shows as disclosed. 17 of the 24 were recorded in the last 12 months.

03 Vulnerabilities

Recorded vulnerabilities for io.netty:netty-codec-http

The 5 most severe of 24 vulnerabilities recorded for this package

Search all 24 in the database →
Vulnerability Severity Fixed version ↓ Disclosed ↓
CVE-2019-20444: HTTP Request Smuggling in Netty 9.1 critical 4.1.44 21 Feb 2020
CVE-2026-56745: Netty Codec HTTP ByteBuf Reference Leak Leading to Memory Exhaustion 8.7 high 4.2.16.Final 22 Jul 2026
CVE-2025-58056: Netty HTTP/1.1 Chunk Extension Parsing Flaw Leading to Request Smuggling 8.2 high 4.1.125.Final 04 Sep 2025
CVE-2026-42587: Netty HttpContentDecompressor Denial of Service Vulnerability 7.5 high 4.2.13.Final 07 May 2026
CVE-2026-55831: Netty Codec HTTP Unbounded SETTINGS Frame Count Vulnerability 7.5 high 4.2.16.Final 22 Jul 2026

Vulnerability wrong, a fix missing, or a package we should cover? Report it and we will fix the record. Report Vulnerability Provide Feedback

Updated: 23/Oct/2026 · Vulnerabilities in our DB: 524315

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Questions

About io.netty:netty-codec-http

Is io.netty:netty-codec-http safe to use?

Vulert records 24 vulnerabilities for io.netty:netty-codec-http in Maven: 1 critical, 7 high, 16 medium and 0 low. Every one of them has a published fix, so the practical answer is to run a supported release and keep it patched.

What is io.netty:netty-codec-http's Vulert package health score?

Vulert scores io.netty:netty-codec-http 53/100, which reads as usable, but worth attention. The score weighs the vulnerability record (40), maintenance and release cadence (25), adoption from dependents and stars (20) and community signals such as the OpenSSF scorecard and forks (15).

Is the latest version of io.netty:netty-codec-http affected?

No. 5.0.0.Alpha2, the version you would install today, has no vulnerabilities on record against it. Earlier releases do — the version table above lists each release with what affects it.

Which version of io.netty:netty-codec-http should I use?

5.0.0.Alpha2 is the version Vulert recommends for the affected releases. The version table above lists every release with the vulnerabilities recorded against it, so you can confirm the range you actually run.

How many vulnerabilities does io.netty:netty-codec-http have?

24 vulnerabilities are recorded for io.netty:netty-codec-http in the Maven ecosystem: 1 critical, 7 high, 16 medium and 0 low. The ledger on this page lists the same counts next to the date of the most recent disclosure.

How often are new io.netty:netty-codec-http vulnerabilities disclosed?

17 vulnerabilities were recorded for io.netty:netty-codec-http in the last 12 months, and the oldest entry in this database dates to 21 Feb 2020. Recency matters more than a lifetime total: it shows how actively new issues are being disclosed for the package you are considering.

Which versions of io.netty:netty-codec-http are affected?

Each vulnerability on this page lists the affected version range and the fixed version to move to. Open the vulnerability for the version you actually run — fixes are specific to a release line, not to the package as a whole.

How do I monitor io.netty:netty-codec-http for upcoming vulnerabilities?

Upload the manifest or SBOM for your application at vulert.com/scanner and Vulert keeps checking the io.netty:netty-codec-http version you actually run against new disclosures, then alerts you when one affects it. There is no installation and no source-code access required.