How many CVEs does Netty have?

Netty has 82 published CVE records since 2014, including 58 in the last two years.

How many Netty CVEs are in CISA KEV?

Yes — 1 of Netty's CVEs are listed in CISA's Known Exploited Vulnerabilities catalog, confirmed exploited in the wild and carrying a CISA remediation deadline.

Which Netty products have the most CVEs?

The Netty products with the most published CVEs are netty, io.netty:netty-codec-http, io.netty:netty, org.jboss.netty:netty, io.netty:netty-codec-http2.

What are the most common weakness types in Netty CVEs?

Netty's CVEs most often map to these CWE weakness types: CWE-400 (Uncontrolled Resource Consumption), CWE-444 (Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')), CWE-770 (Allocation of Resources Without Limits or Throttling), CWE-20 (Improper Input Validation).

Are there public exploits for Netty vulnerabilities?

Yes — 29 of Netty's CVEs have a known public exploit.

How many critical Netty vulnerabilities are there?

Netty has 8 critical and 44 high-severity CVEs.

What is the average severity of Netty CVEs?

The average CVSS base score across Netty's scored CVEs is 7.2.

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82 CVEs

1 in CISA KEV

Netty Vulnerabilities

Name: Netty vulnerability dataset (CVEs)
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

CVE security advisories and vulnerability history for Netty.

82

Total CVEs

Published

1

In CISA KEV

Exploited in the wild

29

Public exploits

PoC or exploit code

7.2

Avg CVSS

2014–2026

Overview

Netty has 82 published CVE records since 2014, of which 1 are in CISA's Known Exploited Vulnerabilities catalog and 29 have a known public exploit. The average CVSS base score across scored CVEs is 7.2.

This page aggregates every publicly disclosed vulnerability (CVE) affecting Netty products, with severity breakdowns, the most-affected products, the most common weakness types, and the latest disclosures.

Security scorecard

A quick read on Netty's vulnerability posture, as a share of its 82 published CVEs.

Average CVSS: 7.2
Critical / high: 63%
Actively exploited (KEV): 1%
Public exploit available: 35%
Patch available: 100%

Severity and exploitation

How the CVSS severity of Netty's CVEs breaks down, plus how many are exploited in the wild or have public exploit code.

Critical8

High44

Medium28

Low2

In CISA’s Known Exploited Vulnerabilities catalog

1

One of Netty's CVEs is confirmed exploited in the wild.

Public exploits

29

29 of Netty's CVEs have a known public exploit available.

Most affected products

The Netty products with the most published CVEs. Follow any product to browse its versions and vulnerabilities.

Common weakness types

The CWE weakness categories most often found in Netty CVEs. Follow any weakness for its full explanation.

CNAs that assign these CVEs

The CVE Numbering Authorities that publish Netty CVE records.

Disclosure activity by year

How many Netty CVEs were published each year.

2019

1

2020

4

2021

6

2022

3

2023

2

2024

4

2025

8

2026

50

Latest Netty CVEs

The most recently disclosed vulnerabilities affecting Netty.

Netty: Missing CertificateID Validation in OCSP Response Allows Replay Attacks
CWE-295
High · CVSS 7.4
EPSS 0.2%2026-07-21
Netty: HTTP/2 decompression leaks ByteBuf reference count when the decompressor channel is already closed (Direct memory leak / OOM DoS)
CWE-400
High · CVSS 7.5
EPSS 0.3%2026-07-21
Netty: XML External Entity (XXE) injection via unconfigured XML factory when DTD and entity processing are enabled
CWE-611
High · CVSS 8.3
EPSS 0.3%2026-07-21
Netty: Memory Exhaustion via HTTP/3 Reserved Frame Types
CWE-400
High · CVSS 7.5
EPSS 0.4%2026-07-21
Netty has a Security Control Bypass via CORS Short-Circuit Failure
CWE-284
Medium · CVSS 6.5
EPSS 0.4%2026-07-21
Netty SpdyHttpDecoder: ByteBuf Reference Leak on RST_STREAM Leads to Native Memory Exhaustion
CWE-400
High · CVSS 8.7
EPSS 0.5%2026-07-21
Netty codec-haproxy: Signed-Byte Sentinel Collision in HAProxyMessageDecoder Leads to Unbounded Memory Exhaustion
CWE-400
High · CVSS 8.7
EPSS 0.5%2026-07-21
Netty SPDY zlib header block continues decoded expansion after maxHeaderSize truncation
CWE-400
High · CVSS 7.5
EPSS 0.4%2026-07-20
Netty SPDY SETTINGS frame count materializes unbounded settings map
CWE-770
High · CVSS 7.5
EPSS 0.4%2026-07-20
Netty: Denial of Service via Unbounded Headers in StompSubframeDecoder
CWE-400
High · CVSS 7.5
EPSS 0.4%2026-07-17
Netty susceptible to HTTP/2 Reset Attack with different on-the-wire signature
CWE-770
Medium · CVSS 6.9
EPSS 0.3%2026-06-12
Netty's HttpObjectDecoder skips arbitrary initial control characters when only initial CRLF characters are permitted
CWE-444
Medium · CVSS 5.3
EPSS 0.2%2026-06-12

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Frequently asked questions

Common questions about Netty vulnerabilities.

How many CVEs does Netty have?: Netty has 82 published CVE records since 2014, including 58 in the last two years.
How many Netty CVEs are in CISA KEV?: Yes — 1 of Netty's CVEs are listed in CISA's Known Exploited Vulnerabilities catalog, confirmed exploited in the wild and carrying a CISA remediation deadline.
Which Netty products have the most CVEs?: The Netty products with the most published CVEs are netty, io.netty:netty-codec-http, io.netty:netty, org.jboss.netty:netty, io.netty:netty-codec-http2.
What are the most common weakness types in Netty CVEs?: Netty's CVEs most often map to these CWE weakness types: CWE-400 (Uncontrolled Resource Consumption), CWE-444 (Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')), CWE-770 (Allocation of Resources Without Limits or Throttling), CWE-20 (Improper Input Validation).
Are there public exploits for Netty vulnerabilities?: Yes — 29 of Netty's CVEs have a known public exploit.
How many critical Netty vulnerabilities are there?: Netty has 8 critical and 44 high-severity CVEs.
What is the average severity of Netty CVEs?: The average CVSS base score across Netty's scored CVEs is 7.2.

References

Vulnerability data is sourced from the CVE Program; severity, KEV, and exploit signals are aggregated by RadicalNotion.AI.

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