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Common Weakness Enumeration

CWE-444

Allowed

Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

Abstraction: Base · Status: Incomplete

API response cwe.mitre.org

The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.

626 vulnerabilities reference this CWE, most recent first.

CVE-2026-45372 (GCVE-0-2026-45372)

Vulnerability from cvelistv5 – Published: 2026-05-29 19:21 – Updated: 2026-06-01 17:57
VLAI
Title
cpp-httplib: HTTP header value percent-decoding in server-side `parse_header` enables CRLF injection
Summary
cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, when cpp-httplib's server parses an incoming request, it applies percent-decoding to every header value except Location and Referer. The validity check (is_field_value) is run before decoding, so encoded %0D%0A passes the check and is then expanded to a literal \r\n byte pair inside the stored header value. This vulnerability is fixed in 0.44.0.
Severity
9.9 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:L
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-01 17:57 UTC
CWE
  • CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
Impacted products
Vendor Product Version
yhirose cpp-httplib Affected: < 0.44.0
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-44546 (GCVE-0-2026-44546)

Vulnerability from cvelistv5 – Published: 2026-06-03 13:17 – Updated: 2026-06-03 15:46
VLAI
Title
Header injection via WebSocket upgrade parser differential allows ASGI scope header spoofing
Summary
daphne before 4.2.2 reconstructs a raw HTTP request from Twisted's parsed headers and feeds it to autobahn for WebSocket handshake processing. Twisted does not treat \x0b, \x0c, \x1c, \x1d, \x1e, or \x85 as header line separators, but autobahn decodes header values to str and calls splitlines(). An attacker can exploit this parser differential to inject additional headers into the ASGI scope passed to the application. daphne now rejects requests with these bytes in any header value with a 400 response.
Severity
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-03 15:45 UTC
CWE
  • CWE-444 - (Inconsistent Interpretation of HTTP Requests -- "HTTP Request/Response Smuggling")
Assigner
References
Impacted products
Vendor Product Version
djangoproject daphne Affected: 4.2.0 , ≤ 4.2.1 (python)
Unaffected: 4.2.2 (python)
Create a notification for this product.
Credits
Rene Henningsen Carlton Gibson
Show details on NVD website
To clipboard 

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CVE-2026-42585 (GCVE-0-2026-42585)

Vulnerability from cvelistv5 – Published: 2026-05-13 18:12 – Updated: 2026-05-15 20:34
VLAI
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)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-15 20:33 UTC
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
Impacted products
Vendor Product Version
netty netty Affected: >= 4.2.0.Alpha1, < 4.2.13.Final
Affected: < 4.1.133.Final
Create a notification for this product.
io.netty netty-codec-http Affected: >= 4.2.0.Alpha1, < 4.2.13.Final
Affected: < 4.1.133.Final
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-42584 (GCVE-0-2026-42584)

Vulnerability from cvelistv5 – Published: 2026-05-13 18:10 – Updated: 2026-08-21 12:13
VLAI
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)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-13 18:35 UTC
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
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-2026:53644 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28010 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53806 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
https://access.redhat.com/errata/RHSA-2026:54435 vendor-advisoryx_refsource_REDHAT
Impacted products
Vendor Product Version
netty netty Affected: >= 4.2.0.Alpha1, < 4.2.13.Final
Affected: < 4.1.133.Final
Create a notification for this product.
io.netty netty-codec-http Affected: >= 4.2.0.Alpha1, < 4.2.13.Final
Affected: < 4.1.133.Final
Create a notification for this product.
Red Hat Cryostat 4 on RHEL 9 Unaffected: 4.2.0-10 , < * (rpm)
    cpe:/a:redhat:cryostat:4::el9
Create a notification for this product.
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
Create a notification for this product.
Red Hat Red Hat build of Quarkus 3.27.4 Unaffected: codec-http , < * (rpm)
    cpe:/a:redhat:quarkus:3.27::el8
Create a notification for this product.
Red Hat Red Hat build of Quarkus 3.33.2     cpe:/a:redhat:quarkus:3.33::el8
Create a notification for this product.
Red Hat Red Hat JBoss Enterprise Application Platform 7.4.25 Unaffected: codec-http , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform:7.4::el7
Create a notification for this product.
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:2.16.0-22.redhat_00057.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
Create a notification for this product.
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:2.3.14-11.SP11_redhat_00001.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
Create a notification for this product.
Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:1.5.26-2.Final_redhat_00001.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:2.18.8-1.redhat_00003.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:5.0.31-3.SP2_redhat_00001.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:1.10.0-46.Final_redhat_00044.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:4.1.135-1.Final_redhat_00001.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:2.5.5-30.SP12_redhat_00020.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:2.5.5-24.SP12_redhat_00016.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:2.2.40-2.SP3_redhat_00001.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:7.4.25-2.GA_redhat_00001.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Streams for Apache Kafka 3.2.1 Unaffected: codec-http , < * (rpm)
    cpe:/a:redhat:amq_streams:3.2::el9
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Red Hat Red Hat OpenShift AI 2.25 Unaffected: 1783443816 , < * (rpm)
    cpe:/a:redhat:openshift_ai:2.25::el9
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Red Hat Red Hat OpenShift Dev Spaces 3.28 Unaffected: 1780948325 , < * (rpm)
    cpe:/a:redhat:openshift_devspaces:3.28::el9
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Red Hat Red Hat OpenShift Dev Spaces 3.28 Unaffected: 1780696380 , < * (rpm)
    cpe:/a:redhat:openshift_devspaces:3.28::el9
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Red Hat Red Hat OpenShift Dev Spaces 3.28 Unaffected: 1780694994 , < * (rpm)
    cpe:/a:redhat:openshift_devspaces:3.28::el9
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Red Hat Red Hat OpenShift Dev Spaces 3.29 Unaffected: 1782989027 , < * (rpm)
    cpe:/a:redhat:openshift_devspaces:3.29::el9
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Red Hat OpenShift Serverless     cpe:/a:redhat:serverless:1
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Red Hat Red Hat AMQ Broker 7     cpe:/a:redhat:amq_broker:7
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Red Hat Red Hat AMQ Clients     cpe:/a:redhat:amq_clients:2023
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Red Hat Red Hat build of Apache Camel 4 for Quarkus 3     cpe:/a:redhat:camel_quarkus:3
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Red Hat Red Hat build of Apicurio Registry 2     cpe:/a:redhat:service_registry:2
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Red Hat Red Hat build of Apicurio Registry 3     cpe:/a:redhat:apicurio_registry:3
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Red Hat Red Hat build of Debezium 3     cpe:/a:redhat:debezium:3
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Red Hat Red Hat Build of Keycloak     cpe:/a:redhat:build_keycloak:
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Red Hat Red Hat build of OptaPlanner 8     cpe:/a:redhat:optaplanner:::el6
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Red Hat Red Hat Data Grid 8     cpe:/a:redhat:jboss_data_grid:8
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Red Hat Red Hat Enterprise Linux AI (RHEL AI) 3     cpe:/a:redhat:enterprise_linux_ai:3
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Red Hat Red Hat Fuse 7     cpe:/a:redhat:jboss_fuse:7
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Red Hat Red Hat JBoss Enterprise Application Platform 8     cpe:/a:redhat:jboss_enterprise_application_platform:8
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Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack     cpe:/a:redhat:jbosseapxp
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Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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Red Hat Red Hat Process Automation 7     cpe:/a:redhat:jboss_enterprise_bpms_platform:7
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Red Hat Red Hat Satellite 6     cpe:/a:redhat:satellite:6
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Red Hat Red Hat Single Sign-On 7     cpe:/a:redhat:red_hat_single_sign_on:7
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Red Hat streams for Apache Kafka 2     cpe:/a:redhat:amq_streams:2
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CVE-2026-42581 (GCVE-0-2026-42581)

Vulnerability from cvelistv5 – Published: 2026-05-13 17:54 – Updated: 2026-09-03 12:04
VLAI
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)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
7.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-13 18:42 UTC
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
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-2026:53644 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28010 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53806 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
https://access.redhat.com/errata/RHSA-2026:54435 vendor-advisoryx_refsource_REDHAT
Impacted products
Vendor Product Version
netty netty Affected: >= 4.2.0.Alpha1, < 4.2.13.Final
Affected: < 4.1.133.Final
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Red Hat Cryostat 4 on RHEL 9 Unaffected: 4.2.0-10 , < * (rpm)
    cpe:/a:redhat:cryostat:4::el9
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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
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Red Hat Red Hat build of Quarkus 3.27.4 Unaffected: codec-http , < * (rpm)
    cpe:/a:redhat:quarkus:3.27::el8
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Red Hat Red Hat build of Quarkus 3.33.2     cpe:/a:redhat:quarkus:3.33::el8
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4.25     cpe:/a:redhat:jboss_enterprise_application_platform:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:2.16.0-22.redhat_00057.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:2.3.14-11.SP11_redhat_00001.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:1.5.26-2.Final_redhat_00001.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:2.18.8-1.redhat_00003.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:5.0.31-3.SP2_redhat_00001.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:1.10.0-46.Final_redhat_00044.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:4.1.135-1.Final_redhat_00001.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:2.5.5-30.SP12_redhat_00020.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:2.5.5-24.SP12_redhat_00016.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:2.2.40-2.SP3_redhat_00001.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Red Hat JBoss Enterprise Application Platform 7.4 ELS on RHEL 7 Unaffected: 0:7.4.25-2.GA_redhat_00001.1.el7eap , < * (rpm)
    cpe:/a:redhat:jboss_enterprise_application_platform_els:7.4::el7
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Red Hat Streams for Apache Kafka 3.2.1 Unaffected: codec-http , < * (rpm)
    cpe:/a:redhat:amq_streams:3.2::el9
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Red Hat Red Hat OpenShift AI 2.25 Unaffected: 1783443816 , < * (rpm)
    cpe:/a:redhat:openshift_ai:2.25::el9
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Red Hat Red Hat OpenShift Dev Spaces 3.28 Unaffected: 1780948325 , < * (rpm)
    cpe:/a:redhat:openshift_devspaces:3.28::el9
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Red Hat Red Hat OpenShift Dev Spaces 3.28 Unaffected: 1780696380 , < * (rpm)
    cpe:/a:redhat:openshift_devspaces:3.28::el9
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Red Hat Red Hat OpenShift Dev Spaces 3.28 Unaffected: 1780694994 , < * (rpm)
    cpe:/a:redhat:openshift_devspaces:3.28::el9
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Red Hat Red Hat OpenShift Dev Spaces 3.29 Unaffected: 1782989027 , < * (rpm)
    cpe:/a:redhat:openshift_devspaces:3.29::el9
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Red Hat OpenShift Serverless     cpe:/a:redhat:serverless:1
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Red Hat Red Hat AMQ Broker 7     cpe:/a:redhat:amq_broker:7
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Red Hat Red Hat AMQ Clients     cpe:/a:redhat:amq_clients:2023
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Red Hat Red Hat build of Apache Camel 4 for Quarkus 3     cpe:/a:redhat:camel_quarkus:3
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Red Hat Red Hat build of Apicurio Registry 2     cpe:/a:redhat:service_registry:2
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Red Hat Red Hat build of Apicurio Registry 3     cpe:/a:redhat:apicurio_registry:3
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Red Hat Red Hat build of Debezium 3     cpe:/a:redhat:debezium:3
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Red Hat Red Hat Build of Keycloak     cpe:/a:redhat:build_keycloak:
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Red Hat Red Hat build of OptaPlanner 8     cpe:/a:redhat:optaplanner:::el6
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Red Hat Red Hat Data Grid 8     cpe:/a:redhat:jboss_data_grid:8
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Red Hat Red Hat Enterprise Linux AI (RHEL AI) 3     cpe:/a:redhat:enterprise_linux_ai:3
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Red Hat Red Hat Fuse 7     cpe:/a:redhat:jboss_fuse:7
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Red Hat Red Hat JBoss Enterprise Application Platform 7     cpe:/a:redhat:jboss_enterprise_application_platform:7
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Red Hat Red Hat JBoss Enterprise Application Platform 8     cpe:/a:redhat:jboss_enterprise_application_platform:8
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Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack     cpe:/a:redhat:jbosseapxp
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Red Hat Red Hat OpenShift AI (RHOAI)     cpe:/a:redhat:openshift_ai
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Red Hat Red Hat Process Automation 7     cpe:/a:redhat:jboss_enterprise_bpms_platform:7
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Red Hat Red Hat Satellite 6     cpe:/a:redhat:satellite:6
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Red Hat Red Hat Single Sign-On 7     cpe:/a:redhat:red_hat_single_sign_on:7
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Red Hat streams for Apache Kafka 2     cpe:/a:redhat:amq_streams:2
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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
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)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-14 18:21 UTC
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Vendor Product Version
netty netty Affected: >= 4.2.0.Alpha1, < 4.2.13.Final
Affected: < 4.1.133.Final
Create a notification for this product.
io.netty netty-codec-http Affected: >= 4.2.0.Alpha1, < 4.2.13.Final
Affected: < 4.1.133.Final
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-41873 (GCVE-0-2026-41873)

Vulnerability from cvelistv5 – Published: 2026-04-28 15:18 – Updated: 2026-04-29 11:55 Unsupported When Assigned
VLAI
Title
Pony Mail: Admin account takeover via request smuggling
Summary
** UNSUPPORTED WHEN ASSIGNED ** Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') vulnerability in Pony Mail leading to admin account takeover. This issue affects all versions of the Lua implementation of Pony Mail. There is a Python implementation under development under the name "Pony Mail Foal" that is not affected by this issue, but hasn't been released yet. As the Lua implementation of this project is retired, we do not plan to release a version that fixes this issue. Users are recommended to find an alternative or restrict access to the instance to trusted users. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-29 11:55 UTC
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Pony Mail Affected: 0 , ≤ * (semver)
Create a notification for this product.
Credits
Li Jiantao (@CurseRed) of STAR Labs SG Pte. Ltd. (@starlabs_sg) Tevel Sho of STAR Labs SG Pte. Ltd
Show details on NVD website
To clipboard 

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CVE-2026-41853 (GCVE-0-2026-41853)

Vulnerability from cvelistv5 – Published: 2026-06-09 03:51 – Updated: 2026-06-27 21:04
VLAI
Title
Spring Framework Multipart Request Smuggling in Spring MVC and WebFlux
Summary
Spring MVC and WebFlux applications are vulnerable to Multipart request smuggling attacks. Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-09 13:22 UTC
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests (HTTP Request/Response Smuggling)
Assigner
References
Impacted products
Vendor Product Version
Spring Spring Framework Affected: 7.0.0 , < 7.0.7.1 (custom)
Affected: 6.2.0 , < 6.2.18.1 (custom)
Affected: 6.1.0 , < 6.1.28 (custom)
Affected: 5.3.0 , < 5.3.49 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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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
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)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-07 13:59 UTC
CWE
  • CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
Impacted products
Vendor Product Version
netty netty Affected: >= 4.2.0.Alpha1, <= 4.2.12.Final
Affected: <= 4.1.132.Final
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-40562 (GCVE-0-2026-40562)

Vulnerability from cvelistv5 – Published: 2026-05-06 12:36 – Updated: 2026-05-07 16:13
VLAI
Title
Gazelle versions through 0.49 for Perl allows HTTP Request Smuggling via Improper Header Precedence
Summary
Gazelle versions through 0.49 for Perl allows HTTP Request Smuggling via Improper Header Precedence. Gazelle incorrectly prioritizes "Content-Length" over "Transfer-Encoding: chunked" when both headers are present in an HTTP request. Per RFC 7230 3.3.3, Transfer-Encoding must take precedence. An attacker could exploit this to smuggle malicious HTTP requests via a front-end reverse proxy.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-06 14:14 UTC
CWE
  • CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
Impacted products
Vendor Product Version
KAZEBURO Gazelle Affected: 0 , ≤ 0.49 (custom)
Create a notification for this product.
Credits
CPANSec
Show details on NVD website
To clipboard 

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Mitigation
Implementation

Use a web server that employs a strict HTTP parsing procedure, such as Apache [REF-433].

Mitigation
Implementation

Use only SSL communication.

Mitigation
Implementation

Terminate the client session after each request.

Mitigation
System Configuration

Turn all pages to non-cacheable.

CAPEC-273: HTTP Response Smuggling

An adversary manipulates and injects malicious content in the form of secret unauthorized HTTP responses, into a single HTTP response from a vulnerable or compromised back-end HTTP agent (e.g., server).

See CanPrecede relationships for possible consequences.

CAPEC-33: HTTP Request Smuggling

An adversary abuses the flexibility and discrepancies in the parsing and interpretation of HTTP Request messages using various HTTP headers, request-line and body parameters as well as message sizes (denoted by the end of message signaled by a given HTTP header) by different intermediary HTTP agents (e.g., load balancer, reverse proxy, web caching proxies, application firewalls, etc.) to secretly send unauthorized and malicious HTTP requests to a back-end HTTP agent (e.g., web server).

See CanPrecede relationships for possible consequences.

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