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Package details: pkg:maven/io.netty/netty-codec@4.1.12.Final
purl pkg:maven/io.netty/netty-codec@4.1.12.Final
Next non-vulnerable version 4.1.136.Final
Latest non-vulnerable version 4.1.136.Final
Risk score 3.9
Vulnerabilities affecting this package (12)
Advisory Summary Fixed in package version
CVE-2020-11612

The ZlibDecoders in Netty 4.1.x before 4.1.46 allow for unbounded memory allocation while decoding a ZlibEncoded byte stream. An attacker …
4.1.46.Final
Vulnerable
4.1.47.Final
Vulnerable
4.1.48.Final
Vulnerable
4.1.49.Final
Vulnerable
4.1.50.Final
Vulnerable
4.1.51.Final
Vulnerable
GHSA-3p8m-j85q-pgmj
Aliases:
CVE-2025-58057
Netty's decoders vulnerable to DoS via zip bomb style attack ### Summary With specially crafted input, `BrotliDecoder` and some other …
4.1.125.Final
Vulnerable
GHSA-mj4r-2hfc-f8p6
Aliases:
CVE-2026-42583
Netty Lz4FrameDecoder is vulnerable to resource exhaustion ### Summary Lz4FrameDecoder allocates a ByteBuf of size `decompressedLength` (up to 32 MB …
4.1.133.Final
Vulnerable
CVE-2021-21409
Aliases:
GHSA-f256-j965-7f32
GHSA-wm47-8v5p-wjpj
Inconsistent Interpretation of HTTP Requests (HTTP Request Smuggling) Netty is an open-source, asynchronous event-driven network application framework for rapid development …
4.1.61.Final
Vulnerable
CVE-2021-37137
Aliases:
GHSA-9vjp-v76f-g363
Uncontrolled Resource Consumption The Snappy frame decoder function does not restrict the chunk length which may lead to excessive memory … There are no reported fixed by versions.
CVE-2020-11612

Improper Restriction of Operations within the Bounds of a Memory Buffer The `ZlibDecoders` in Netty contains an unbounded memory allocation …
4.1.46.Final
Vulnerable
CVE-2021-37136
Aliases:
GHSA-grg4-wf29-r9vv
Uncontrolled Resource Consumption The Bzip2 decompression decoder function does not allow setting size restrictions on the decompressed output data (which … There are no reported fixed by versions.
GHSA-558v-64gr-wgg4
Aliases:
CVE-2026-59901
Netty: [Bzip2Decoder] Infinite Loop in RLE State Machine Leads to Event-Loop Thread Hang The `Bzip2Decoder` handler in Netty's compression codec …
4.1.136.Final
Not vulnerable
CVE-2026-42583
Aliases:
GHSA-mj4r-2hfc-f8p6
Netty Lz4FrameDecoder is vulnerable to resource exhaustion Lz4FrameDecoder allocates a ByteBuf of size `decompressedLength` (up to 32 MB per block) … There are no reported fixed by versions.
CVE-2026-59901
Aliases:
GHSA-558v-64gr-wgg4
Netty: [Bzip2Decoder] Infinite Loop in RLE State Machine Leads to Event-Loop Thread Hang The `Bzip2Decoder` handler in Netty's compression codec … There are no reported fixed by versions.
GHSA-9vjp-v76f-g363
Aliases:
CVE-2021-37137
SnappyFrameDecoder doesn't restrict chunk length any may buffer skippable chunks in an unnecessary way ### Impact The Snappy frame decoder …
4.1.68.Final
Vulnerable
4.1.68.Final
Vulnerable
GHSA-grg4-wf29-r9vv
Aliases:
CVE-2021-37136
Bzip2Decoder doesn't allow setting size restrictions for decompressed data ### Impact The Bzip2 decompression decoder function doesn't allow setting size …
4.1.68.Final
Vulnerable
4.1.68.Final
Vulnerable
This package is not known to fix any advisories.