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(CVE-2026-42581)
Vulnerability from cleanstart – Published: 2026-09-01 11:17 – Updated: 2026-09-18 11:59 – Source website
Withdrawn 2026-09-18
VLAI
Summary
Security fixes in apache-activemq-artemis 2.56.0-r1
Details
Package apache-activemq-artemis version 2.56.0-r1 fixes 15 vulnerabilities: CVE-2026-42581, CVE-2026-42584, CVE-2026-42585, CVE-2026-42587, CVE-2026-41417...
References
| URL | Type | |
|---|---|---|
{
"affected": [
{
"package": {
"ecosystem": "CleanStart",
"name": "apache-activemq-artemis"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.56.0-r1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.56.0-r1"
]
}
],
"credits": [],
"database_specific": {},
"details": "Package apache-activemq-artemis version 2.56.0-r1 fixes 15 vulnerabilities: CVE-2026-42581, CVE-2026-42584, CVE-2026-42585, CVE-2026-42587, CVE-2026-41417...",
"id": "CLEANSTART-2026-DV18988",
"modified": "2026-09-18T11:59:01.768079Z",
"published": "2026-09-01T11:17:16Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/apache/activemq-artemis"
}
],
"related": [],
"schema_version": "1.7.3",
"summary": "Security fixes in apache-activemq-artemis 2.56.0-r1",
"upstream": [
"CVE-2026-42581",
"CVE-2026-42584",
"CVE-2026-42585",
"CVE-2026-42587",
"CVE-2026-41417",
"CVE-2026-42580",
"CVE-2026-50020",
"CVE-2026-59898",
"CVE-2026-59899",
"CVE-2026-55831",
"CVE-2026-55833",
"CVE-2026-56745",
"CVE-2026-59921",
"CVE-2026-56746",
"CVE-2026-59903"
],
"withdrawn": "2026-09-18T11:59:01.768079Z"
}
CVE-2026-56746 (GCVE-0-2026-56746)
Vulnerability from cvelistv5 – Published: 2026-07-21 21:36 – Updated: 2026-07-22 13:39
VLAI
EPSS
VEX
Title
Netty has a Security Control Bypass via CORS Short-Circuit Failure
Summary
Netty is a network application framework for development of protocol servers and clients. Versions 4.2.0.Final through 4.2.15.Final and 4.1.0.Final through 4.1.135.Final, are vulnerable to security control bypass during the origin evaluation process. CorsHandler provides a shortCircuit() configuration designed to reject unauthorized cross-origin requests immediately, acting as a security control before requests reach the application. However, due to a logical operator error in the origin evaluation process, this protection can be entirely bypassed. An attacker can bypass the short-circuit mechanism by sending a request with an Origin: null header. This failure forwards unauthorized requests to the backend application, bypassing intended access controls. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-22 13:39 UTC
CWE
- CWE-284 - Improper Access Control
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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}
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},
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}
CVE-2026-59898 (GCVE-0-2026-59898)
Vulnerability from cvelistv5 – Published: 2026-07-29 18:02 – Updated: 2026-07-30 15:19
VLAI
EPSS
VEX
Title
Netty: WebSockets V07/V08 handshaker missing Connection/Upgrade validation
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, ab attacker can force WebSocket upgrade via the lax V07 (or V08) handshaker by sending `Sec-WebSocket-Version: 7` and omitting `Connection: Upgrade` / `Upgrade: websocket` headers, completing a protocol switch that a proxy would not recognize as an Upgrade request and enabling HTTP request smuggling / protocol-confusion attacks. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 13:55 UTC
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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}
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}
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}
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CVE-2026-59899 (GCVE-0-2026-59899)
Vulnerability from cvelistv5 – Published: 2026-07-29 18:00 – Updated: 2026-07-30 14:01
VLAI
EPSS
VEX
Title
Netty HttpContentEncoder: Unbounded Per-Connection Queue Growth via HTTP/1.1 Pipelining Leads to Denial of Service
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, `HttpContentEncoder` (the superclass of the production handler `HttpContentCompressor`) maintains a per-channel `ArrayDeque<CharSequence>` named `acceptEncodingQueue` that accumulates attacker-controlled data without any size limit. The queue is filled on the I/O thread for every inbound HTTP request and drained only when the application later writes a non-1xx response. This creates a resource exhaustion vulnerability when an attacker exploits HTTP/1.1 pipelining to flood the connection with requests faster than the application produces responses. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 14:01 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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}
],
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CVE-2026-59903 (GCVE-0-2026-59903)
Vulnerability from cvelistv5 – Published: 2026-08-17 17:56 – Updated: 2026-08-17 18:14
VLAI
EPSS
VEX
Title
Netty: Cache Poisoning and Information Disclosure via CORS Vary Header Overwrite
Summary
Netty is an asynchronous, event-driven network application framework. Prior to 4.1.137.Final and 4.2.17.Final, io.netty.handler.codec.http.cors.CorsHandler setVaryHeader replaces application Vary headers such as Authorization or Cookie with Origin, allowing a caching proxy or CDN to reuse authenticated responses across users and disclose sensitive information. This issue is fixed in versions 4.1.137.Final and 4.2.17.Final.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-17 18:13 UTC
CWE
- CWE-524 - Use of Cache Containing Sensitive Information
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://github.com/netty/netty/pull/17213 | x_refsource_MISC |
| https://github.com/netty/netty/pull/17217 | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
| https://github.com/netty/netty/releases/tag/netty… | x_refsource_MISC |
Impacted products
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}
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}
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}
],
"metrics": [
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}
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],
"url": "https://github.com/netty/netty/security/advisories/GHSA-8c42-7qj2-3j46"
},
{
"name": "https://github.com/netty/netty/pull/17213",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/pull/17213"
},
{
"name": "https://github.com/netty/netty/pull/17217",
"tags": [
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],
"url": "https://github.com/netty/netty/pull/17217"
},
{
"name": "https://github.com/netty/netty/releases/tag/netty-4.1.137.Final",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/netty/netty/releases/tag/netty-4.1.137.Final"
},
{
"name": "https://github.com/netty/netty/releases/tag/netty-4.2.17.Final",
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],
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}
],
"source": {
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"discovery": "UNKNOWN"
},
"title": "Netty: Cache Poisoning and Information Disclosure via CORS Vary Header Overwrite"
}
},
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"cveId": "CVE-2026-59903",
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"dateReserved": "2026-07-07T16:40:07.984Z",
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CVE-2026-59921 (GCVE-0-2026-59921)
Vulnerability from cvelistv5 – Published: 2026-07-28 22:28 – Updated: 2026-07-29 17:32
VLAI
EPSS
VEX
Title
Netty: CRLF Injection via Multipart Filename in Netty HttpPostRequestEncoder
Summary
Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, HttpPostRequestEncoder constructs multipart HTTP request bodies by directly concatenating user-supplied filenames and field names into Content-Disposition MIME headers without validating or sanitizing CRLF characters (\r\n). Since MIME headers are delimited by CRLF, an attacker who controls the filename can inject arbitrary MIME headers into the multipart body part. The root cause is that neither the encoder nor the FileUpload implementations' setFilename() methods, which only check for null, neutralize CRLF characters before the filename is embedded into the header. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final.
Severity
5.7 (Medium)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-29 12:49 UTC
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
Impacted products
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-59921",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-07-29T12:49:35.429260Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-07-29T12:50:40.039Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/netty/netty/security/advisories/GHSA-gcjf-9mgh-3p7g"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "netty",
"vendor": "netty",
"versions": [
{
"status": "affected",
"version": "\u003e= 4.2.0.Final, \u003c 4.2.16.Final"
},
{
"status": "affected",
"version": "\u003c 4.1.136.Final"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.136.Final and 4.2.16.Final, HttpPostRequestEncoder constructs multipart HTTP request bodies by directly concatenating user-supplied filenames and field names into Content-Disposition MIME headers without validating or sanitizing CRLF characters (\\r\\n). Since MIME headers are delimited by CRLF, an attacker who controls the filename can inject arbitrary MIME headers into the multipart body part. The root cause is that neither the encoder nor the FileUpload implementations\u0027 setFilename() methods, which only check for null, neutralize CRLF characters before the filename is embedded into the header. This issue has been fixed in versions 4.1.136.Final and 4.2.16.Final."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "ADJACENT_NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.7,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-93",
"description": "CWE-93: Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-07-29T17:32:31.931Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/netty/netty/security/advisories/GHSA-gcjf-9mgh-3p7g",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/netty/netty/security/advisories/GHSA-gcjf-9mgh-3p7g"
}
],
"source": {
"advisory": "GHSA-gcjf-9mgh-3p7g",
"discovery": "UNKNOWN"
},
"title": "Netty: CRLF Injection via Multipart Filename in Netty HttpPostRequestEncoder"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-59921",
"datePublished": "2026-07-28T22:28:51.267Z",
"dateReserved": "2026-07-07T18:20:06.125Z",
"dateUpdated": "2026-07-29T17:32:31.931Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Trend slope:
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(linear fit over daily sighting counts)
Show additional events:
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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