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.
References
| Link | Resource |
|---|---|
| https://github.com/netty/netty/security/advisories/GHSA-mj4r-2hfc-f8p6 | Exploit Vendor Advisory |
| https://github.com/netty/netty/security/advisories/GHSA-mj4r-2hfc-f8p6 | Exploit Vendor Advisory |
Configurations
Configuration 1 (hide)
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History
18 May 2026, 12:22
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Netty netty
Netty |
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| References | () https://github.com/netty/netty/security/advisories/GHSA-mj4r-2hfc-f8p6 - Exploit, Vendor Advisory | |
| CPE | cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:* |
14 May 2026, 16:16
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/netty/netty/security/advisories/GHSA-mj4r-2hfc-f8p6 - |
13 May 2026, 19:17
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-05-13 19:17
Updated : 2026-05-18 12:22
NVD link : CVE-2026-42583
Mitre link : CVE-2026-42583
CVE.ORG link : CVE-2026-42583
JSON object : View
Products Affected
netty
- netty