Vulnerabilites related to netty - netty
CVE-2025-59419 (GCVE-0-2025-59419)
Vulnerability from cvelistv5
Published
2025-10-15 15:42
Modified
2025-10-17 19:44
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Summary
Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.128.Final and 4.2.7.Final, the SMTP codec in Netty contains an SMTP command injection vulnerability due to insufficient input validation for Carriage Return (\r) and Line Feed (\n) characters in user-supplied parameters. The vulnerability exists in io.netty.handler.codec.smtp.DefaultSmtpRequest, where parameters are directly concatenated into the SMTP command string without sanitization. When methods such as SmtpRequests.rcpt(recipient) are called with a malicious string containing CRLF sequences, attackers can inject arbitrary SMTP commands. Because the injected commands are sent from the server's trusted IP address, resulting emails will likely pass SPF and DKIM authentication checks, making them appear legitimate. This allows remote attackers who can control SMTP command parameters (such as email recipients) to forge arbitrary emails from the trusted server, potentially impersonating executives and forging high-stakes corporate communications. This issue has been patched in versions 4.1.129.Final and 4.2.8.Final. No known workarounds exist.
References
| ► | URL | Tags | ||||||
|---|---|---|---|---|---|---|---|---|
|
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Impacted products
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CVE-2022-41881 (GCVE-0-2022-41881)
Vulnerability from cvelistv5
Published
2022-12-12 00:00
Modified
2025-04-22 15:57
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-674 - Uncontrolled Recursion
Summary
Netty project is an event-driven asynchronous network application framework. In versions prior to 4.1.86.Final, a StackOverflowError can be raised when parsing a malformed crafted message due to an infinite recursion. This issue is patched in version 4.1.86.Final. There is no workaround, except using a custom HaProxyMessageDecoder.
References
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CVE-2025-25193 (GCVE-0-2025-25193)
Vulnerability from cvelistv5
Published
2025-02-10 22:02
Modified
2025-02-21 18:03
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-400 - Uncontrolled Resource Consumption
Summary
Netty, an asynchronous, event-driven network application framework, has a vulnerability in versions up to and including 4.1.118.Final. An unsafe reading of environment file could potentially cause a denial of service in Netty. When loaded on an Windows application, Netty attempts to load a file that does not exist. If an attacker creates such a large file, the Netty application crash. A similar issue was previously reported as CVE-2024-47535. This issue was fixed, but the fix was incomplete in that null-bytes were not counted against the input limit. Commit d1fbda62d3a47835d3fb35db8bd42ecc205a5386 contains an updated fix.
References
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CVE-2022-41915 (GCVE-0-2022-41915)
Vulnerability from cvelistv5
Published
2022-12-13 00:00
Modified
2025-04-22 15:57
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Netty project is an event-driven asynchronous network application framework. Starting in version 4.1.83.Final and prior to 4.1.86.Final, when calling `DefaultHttpHeadesr.set` with an _iterator_ of values, header value validation was not performed, allowing malicious header values in the iterator to perform HTTP Response Splitting. This issue has been patched in version 4.1.86.Final. Integrators can work around the issue by changing the `DefaultHttpHeaders.set(CharSequence, Iterator<?>)` call, into a `remove()` call, and call `add()` in a loop over the iterator of values.
References
Impacted products
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CVE-2021-43797 (GCVE-0-2021-43797)
Vulnerability from cvelistv5
Published
2021-12-09 00:00
Modified
2024-08-04 04:03
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Summary
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. Netty prior to version 4.1.71.Final skips control chars when they are present at the beginning / end of the header name. It should instead fail fast as these are not allowed by the spec and could lead to HTTP request smuggling. Failing to do the validation might cause netty to "sanitize" header names before it forward these to another remote system when used as proxy. This remote system can't see the invalid usage anymore, and therefore does not do the validation itself. Users should upgrade to version 4.1.71.Final.
References
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CVE-2021-21409 (GCVE-0-2021-21409)
Vulnerability from cvelistv5
Published
2021-03-30 15:05
Modified
2024-08-03 18:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')
Summary
Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty (io.netty:netty-codec-http2) before version 4.1.61.Final there is a vulnerability that enables request smuggling. The content-length header is not correctly validated if the request only uses a single Http2HeaderFrame with the endStream set to to true. This could lead to request smuggling if the request is proxied to a remote peer and translated to HTTP/1.1. This is a followup of GHSA-wm47-8v5p-wjpj/CVE-2021-21295 which did miss to fix this one case. This was fixed as part of 4.1.61.Final.
References
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|
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"name": "[pulsar-commits] 20210419 [GitHub] [pulsar] lhotari commented on pull request #10266: [Security] Upgrade Netty to 4.1.63.Final to address CVE-2021-21409",
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"name": "[pulsar-commits] 20210420 [GitHub] [pulsar] eolivelli merged pull request #10266: [Security] Upgrade Netty to 4.1.63.Final to address CVE-2021-21409",
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"name": "[kafka-jira] 20210506 [GitHub] [kafka] dongjinleekr opened a new pull request #10642: KAFKA-12756: Update Zookeeper to 3.6.3 or higher",
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"name": "[flink-dev] 20210424 [jira] [Created] (FLINK-22441) In Flink v1.11.3 contains netty(version:3.10.6) netty(version:4.1.60) . There are many vulnerabilities, like CVE-2021-21409 etc. please confirm these version and fix. thx",
"refsource": "MLIST",
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"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/rd8f72411fb75b98d366400ae789966373b5c3eb3f511e717caf3e49e@%3Cissues.flink.apache.org%3E"
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"name": "[flink-issues] 20210426 [jira] [Updated] (FLINK-22441) In Flink v1.11.3 contains netty(version:3.10.6) netty(version:4.1.60) . There are many vulnerabilities, like CVE-2021-21409 etc. please confirm these version and fix. thx",
"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/re7c69756a102bebce8b8681882844a53e2f23975a189363e68ad0324@%3Cissues.flink.apache.org%3E"
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"name": "[kafka-jira] 20210506 [GitHub] [kafka] dongjinleekr opened a new pull request #10642: KAFKA-12756: Update Zookeeper to 3.6.3 or higher",
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"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/r855b4b6814ac829ce2d48dd9d8138d07f33387e710de798ee92c011e@%3Cissues.flink.apache.org%3E"
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"name": "[zookeeper-notifications] 20210517 [GitHub] [zookeeper] gpiyush-dev opened a new pull request #1696: ZOOKEEPER-4295: Upgrade Netty library to \u003e 4.1.60 due to security vulnerability CVE-2021-21409 in branch-3.5",
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"name": "[flink-issues] 20210618 [jira] [Updated] (FLINK-22441) In Flink v1.11.3 contains netty(version:3.10.6) netty(version:4.1.60) . There are many vulnerabilities, like CVE-2021-21409 etc. please confirm these version and fix. thx",
"refsource": "MLIST",
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CVE-2024-47535 (GCVE-0-2024-47535)
Vulnerability from cvelistv5
Published
2024-11-12 15:50
Modified
2024-11-13 20:44
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-400 - Uncontrolled Resource Consumption
Summary
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. An unsafe reading of environment file could potentially cause a denial of service in Netty. When loaded on an Windows application, Netty attempts to load a file that does not exist. If an attacker creates such a large file, the Netty application crashes. This vulnerability is fixed in 4.1.115.
References
| ► | URL | Tags | ||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
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CVE-2025-55163 (GCVE-0-2025-55163)
Vulnerability from cvelistv5
Published
2025-08-13 14:17
Modified
2025-11-04 21:13
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.124.Final and 4.2.4.Final, Netty is vulnerable to MadeYouReset DDoS. This is a logical vulnerability in the HTTP/2 protocol, that uses malformed HTTP/2 control frames in order to break the max concurrent streams limit - which results in resource exhaustion and distributed denial of service. This issue has been patched in versions 4.1.124.Final and 4.2.4.Final.
References
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Impacted products
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CVE-2022-24823 (GCVE-0-2022-24823)
Vulnerability from cvelistv5
Published
2022-05-06 12:05
Modified
2025-04-22 18:01
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Netty is an open-source, asynchronous event-driven network application framework. The package `io.netty:netty-codec-http` prior to version 4.1.77.Final contains an insufficient fix for CVE-2021-21290. When Netty's multipart decoders are used local information disclosure can occur via the local system temporary directory if temporary storing uploads on the disk is enabled. This only impacts applications running on Java version 6 and lower. Additionally, this vulnerability impacts code running on Unix-like systems, and very old versions of Mac OSX and Windows as they all share the system temporary directory between all users. Version 4.1.77.Final contains a patch for this vulnerability. As a workaround, specify one's own `java.io.tmpdir` when starting the JVM or use DefaultHttpDataFactory.setBaseDir(...) to set the directory to something that is only readable by the current user.
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CVE-2024-29025 (GCVE-0-2024-29025)
Vulnerability from cvelistv5
Published
2024-03-25 20:09
Modified
2025-02-13 17:47
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Summary
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. The `HttpPostRequestDecoder` can be tricked to accumulate data. While the decoder can store items on the disk if configured so, there are no limits to the number of fields the form can have, an attacher can send a chunked post consisting of many small fields that will be accumulated in the `bodyListHttpData` list. The decoder cumulates bytes in the `undecodedChunk` buffer until it can decode a field, this field can cumulate data without limits. This vulnerability is fixed in 4.1.108.Final.
References
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CVE-2025-58057 (GCVE-0-2025-58057)
Vulnerability from cvelistv5
Published
2025-09-03 21:46
Modified
2025-09-04 19:59
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
Summary
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.
References
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Impacted products
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CVE-2021-21290 (GCVE-0-2021-21290)
Vulnerability from cvelistv5
Published
2021-02-08 20:10
Modified
2024-08-03 18:09
Severity ?
VLAI Severity ?
EPSS score ?
CWE
Summary
Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty before version 4.1.59.Final there is a vulnerability on Unix-like systems involving an insecure temp file. When netty's multipart decoders are used local information disclosure can occur via the local system temporary directory if temporary storing uploads on the disk is enabled. On unix-like systems, the temporary directory is shared between all user. As such, writing to this directory using APIs that do not explicitly set the file/directory permissions can lead to information disclosure. Of note, this does not impact modern MacOS Operating Systems. The method "File.createTempFile" on unix-like systems creates a random file, but, by default will create this file with the permissions "-rw-r--r--". Thus, if sensitive information is written to this file, other local users can read this information. This is the case in netty's "AbstractDiskHttpData" is vulnerable. This has been fixed in version 4.1.59.Final. As a workaround, one may specify your own "java.io.tmpdir" when you start the JVM or use "DefaultHttpDataFactory.setBaseDir(...)" to set the directory to something that is only readable by the current user.
References
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{
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{
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"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/r4efed2c501681cb2e8d629da16e48d9eac429624fd4c9a8c6b8e7020@%3Cdev.tinkerpop.apache.org%3E"
},
{
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"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/r02e467123d45006a1dda20a38349e9c74c3a4b53e2e07be0939ecb3f@%3Cdev.ranger.apache.org%3E"
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"refsource": "MLIST",
"url": "https://lists.apache.org/thread.html/r7bb3cdc192e9a6f863d3ea05422f09fa1ae2b88d4663e63696ee7ef5@%3Cdev.ranger.apache.org%3E"
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"name": "[pulsar-commits] 20210329 [GitHub] [pulsar] yaswanthnadella opened a new issue #10071: CVE-2021-21295 \u0026 CVE-2021-21290",
"refsource": "MLIST",
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CVE-2023-34462 (GCVE-0-2023-34462)
Vulnerability from cvelistv5
Published
2023-06-22 23:00
Modified
2025-02-13 16:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-400 - Uncontrolled Resource Consumption
Summary
Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. The `SniHandler` can allocate up to 16MB of heap for each channel during the TLS handshake. When the handler or the channel does not have an idle timeout, it can be used to make a TCP server using the `SniHandler` to allocate 16MB of heap. The `SniHandler` class is a handler that waits for the TLS handshake to configure a `SslHandler` according to the indicated server name by the `ClientHello` record. For this matter it allocates a `ByteBuf` using the value defined in the `ClientHello` record. Normally the value of the packet should be smaller than the handshake packet but there are not checks done here and the way the code is written, it is possible to craft a packet that makes the `SslClientHelloHandler`. This vulnerability has been fixed in version 4.1.94.Final.
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CVE-2025-24970 (GCVE-0-2025-24970)
Vulnerability from cvelistv5
Published
2025-02-10 21:57
Modified
2025-04-16 15:37
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-20 - Improper Input Validation
Summary
Netty, an asynchronous, event-driven network application framework, has a vulnerability starting in version 4.1.91.Final and prior to version 4.1.118.Final. When a special crafted packet is received via SslHandler it doesn't correctly handle validation of such a packet in all cases which can lead to a native crash. Version 4.1.118.Final contains a patch. As workaround its possible to either disable the usage of the native SSLEngine or change the code manually.
References
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"cveId": "CVE-2025-24970",
"datePublished": "2025-02-10T21:57:28.730Z",
"dateReserved": "2025-01-29T15:18:03.210Z",
"dateUpdated": "2025-04-16T15:37:17.191Z",
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CVE-2025-58056 (GCVE-0-2025-58056)
Vulnerability from cvelistv5
Published
2025-09-03 20:56
Modified
2025-09-05 18:41
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Summary
Netty is an asynchronous event-driven network application framework for development of maintainable high performance protocol servers and clients. In versions 4.1.124.Final, and 4.2.0.Alpha3 through 4.2.4.Final, Netty incorrectly accepts standalone newline characters (LF) as a chunk-size line terminator, regardless of a preceding carriage return (CR), instead of requiring CRLF per HTTP/1.1 standards. When combined with reverse proxies that parse LF differently (treating it as part of the chunk extension), attackers can craft requests that the proxy sees as one request but Netty processes as two, enabling request smuggling attacks. This is fixed in versions 4.1.125.Final and 4.2.5.Final.
References
| ► | URL | Tags | |||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Impacted products
{
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"id": "CVE-2025-58056",
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"timestamp": "2025-09-04T19:09:52.390986Z",
"version": "2.0.3"
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"title": "CISA ADP Vulnrichment"
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}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 2.9,
"baseSeverity": "LOW",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
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"name": "https://github.com/netty/netty/security/advisories/GHSA-fghv-69vj-qj49",
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"url": "https://github.com/netty/netty/security/advisories/GHSA-fghv-69vj-qj49"
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{
"name": "https://github.com/JLLeitschuh/unCVEed/issues/1",
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{
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"tags": [
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{
"name": "https://github.com/netty/netty/commit/edb55fd8e0a3bcbd85881e423464f585183d1284",
"tags": [
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"url": "https://github.com/netty/netty/commit/edb55fd8e0a3bcbd85881e423464f585183d1284"
},
{
"name": "https://datatracker.ietf.org/doc/html/rfc9112#name-chunked-transfer-coding",
"tags": [
"x_refsource_MISC"
],
"url": "https://datatracker.ietf.org/doc/html/rfc9112#name-chunked-transfer-coding"
},
{
"name": "https://w4ke.info/2025/06/18/funky-chunks.html",
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"x_refsource_MISC"
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"url": "https://w4ke.info/2025/06/18/funky-chunks.html"
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],
"source": {
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"discovery": "UNKNOWN"
},
"title": "Netty is vulnerable to request smuggling due to incorrect parsing of chunk extensions"
}
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