Medium

Netty denial of service vulnerability

  • Disclosed: 13.05.2022
  • Updated: 11.10.2026 12:21

WebSocket08FrameDecoder in Netty 3.6.x before 3.6.9, 3.7.x before 3.7.1, 3.8.x before 3.8.2, 3.9.x before 3.9.1, and 4.0.x before 4.0.19 allows remote attackers to cause a denial of service (memory consumption) via a TextWebSocketFrame followed by a long stream of ContinuationWebSocketFrames.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Java / Kotlin (Maven) io.netty:netty >= 3.6.0.Beta1, < 3.6.9.Final, >= 3.7.0.Final, < 3.7.1.Final, >= 3.8.0.Final, < 3.8.2.Final, >= 3.9.0.Final, < 3.9.1.Final, >= 4.0.0.Alpha1, < 4.0.19.Final 3.6.9.Final, 3.7.1.Final, 3.8.2.Final, 3.9.1.Final, 4.0.19.Final
Java / Kotlin (Maven) io.netty:netty-all >= 4.0.0.Alpha1, < 4.0.19.Final 4.0.19.Final

References

CVSS score -
Weakness (CWE)
-
Platform
Java / Kotlin (Maven)
Package
io.netty:netty, io.netty:netty-all
Disclosed
13.05.2022
Updated
11.10.2026 12:21

Sources and licenses

OSV / GitHub Advisory Database - GHSA-7vpq-g998-qpv7 - CC BY 4.0

Vulnerability history: io.netty:netty-all

All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
2
First → latest
10.2019 05.2022
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • High 1
  • Medium 1

Disclosures per year

  1. 2019: 1
  2. 2020: 0
  3. 2021: 0
  4. 2022: 1
  5. 2023: 0
  6. 2024: 0
  7. 2025: 0
  8. 2026: 0
  1. Netty denial of service vulnerability this entry
    Medium CVE-2014-0193 >= 4.0.0.Alpha1, < 4.0.19.Final 4.0.19.Final
  2. High · 7.5 CVE-2019-16869 >= 4.0.0.Beta1, < 4.1.42.Final 4.1.42.Final

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