netty-handler-4.1.119.Final.jar: 2 vulnerabilities (highest severity is: 7.5) reachable

[mend-for-github-com]

Vulnerable Library - netty-handler-4.1.119.Final.jar

Path to dependency file: /build.gradle

Path to vulnerable library: /tmp/containerbase/cache/.gradle/caches/modules-2/files-2.1/io.netty/netty-codec/4.1.119.Final/337ca8e8c3ef23925e02d56347b414d7616d1d02/netty-codec-4.1.119.Final.jar

Vulnerabilities

Vulnerability	Severity	CVSS	Exploit Maturity	EPSS	Dependency	Type	Fixed in (netty-handler version)	Remediation Possible**	Reachability
CVE-2025-58057	Medium	5.3	Not Defined	0.068%	netty-codec-4.1.119.Final.jar	Transitive	4.1.125.Final	✅	Reachable
CVE-2026-42583	High	7.5	Not Defined	0.04%	netty-codec-4.1.119.Final.jar	Transitive	4.1.133.Final	✅

**In some cases, Remediation PR cannot be created automatically for a vulnerability despite the availability of remediation

Details

CVE-2025-58057

Vulnerable Library - netty-codec-4.1.119.Final.jar

Library home page: https://netty.io/

Path to dependency file: /build.gradle

Path to vulnerable library: /tmp/containerbase/cache/.gradle/caches/modules-2/files-2.1/io.netty/netty-codec/4.1.119.Final/337ca8e8c3ef23925e02d56347b414d7616d1d02/netty-codec-4.1.119.Final.jar

Dependency Hierarchy:

• netty-handler-4.1.119.Final.jar (Root Library)
  • ❌ netty-codec-4.1.119.Final.jar (Vulnerable Library)

Found in base branch: main

Reachability Analysis

This vulnerability is potentially reachable

com.opentok.util.HttpClient (Application)
  -> org.asynchttpclient.DefaultAsyncHttpClient (Extension)
   -> org.asynchttpclient.netty.channel.ChannelManager (Extension)
    -> io.netty.handler.codec.http.websocketx.WebSocketFrameAggregator (Extension)
     -> io.netty.handler.codec.MessageAggregator (Extension)
      -> ❌ io.netty.handler.codec.MessageAggregationException (Vulnerable Component)

Vulnerability Details

Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In netty-codec-compression versions 4.1.124.Final and below, and netty-codec versions 4.2.4.Final and below, when supplied with specially crafted input, BrotliDecoder and certain other decompression decoders will allocate a large number of reachable byte buffers, which can lead to denial of service. BrotliDecoder.decompress has no limit in how often it calls pull, decompressing data 64K bytes at a time. The buffers are saved in the output list, and remain reachable until OOM is hit. This is fixed in versions 4.1.125.Final of netty-codec and 4.2.5.Final of netty-codec-compression.
Mend Note: The description of this vulnerability differs from MITRE.

Publish Date: 2025-09-03

URL: CVE-2025-58057

Threat Assessment

Exploit Maturity: Not Defined

EPSS: 0.068%

CVSS 3 Score Details (5.3)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: Low

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Release Date: 2025-09-03

Fix Resolution (io.netty:netty-codec): 4.1.125.Final

Direct dependency fix Resolution (io.netty:netty-handler): 4.1.125.Final

⛑️ Automatic Remediation will be attempted for this issue.

CVE-2026-42583

Vulnerable Library - netty-codec-4.1.119.Final.jar

Library home page: https://netty.io/

Path to dependency file: /build.gradle

Path to vulnerable library: /tmp/containerbase/cache/.gradle/caches/modules-2/files-2.1/io.netty/netty-codec/4.1.119.Final/337ca8e8c3ef23925e02d56347b414d7616d1d02/netty-codec-4.1.119.Final.jar

Dependency Hierarchy:

• netty-handler-4.1.119.Final.jar (Root Library)
  • ❌ netty-codec-4.1.119.Final.jar (Vulnerable Library)

Found in base branch: main

Vulnerability Details

Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Lz4FrameDecoder allocates a ByteBuf of size decompressedLength (up to 32 MB per block) before LZ4 runs. A peer only needs a 21-byte header plus compressedLength payload bytes - 22 bytes if compressedLength == 1 - to force that allocation. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.

Publish Date: 2026-05-13

URL: CVE-2026-42583

Threat Assessment

Exploit Maturity: Not Defined

EPSS: 0.04%

CVSS 3 Score Details (7.5)

Base Score Metrics:

• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
• Impact Metrics:
  • Confidentiality Impact: None
  • Integrity Impact: None
  • Availability Impact: High

For more information on CVSS3 Scores, click here.

Suggested Fix

Type: Upgrade version

Release Date: 2026-05-08

Fix Resolution (io.netty:netty-codec): 4.1.133.Final

Direct dependency fix Resolution (io.netty:netty-handler): 4.1.133.Final

⛑️ Automatic Remediation will be attempted for this issue.

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⛑️Automatic Remediation will be attempted for this issue.