> CVE-2026-42581 [MEDIUM]

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PUBLISHED
2026-05-13 19:17
MODIFIED
2026-05-13 19:17
CVSS_SCORE V3
5.8
EPSS (Prob. Exploit)
0.63%
Top 49.8%
DATA SOURCES:
NVD 🔗 2026-05-13 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-01 OSV 🔗 2026-11-02

> DESCRIPTION

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.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
EXPLOITABILITY
3.9
IMPACT
1.4

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Changed (C)
Impact s'étend au-delà du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
None (N)
Aucune divulgation d'informations
I (Impact Intégrité)
Integrity Impact
Low (L)
Modification limitée des données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
Low
Modification limitée des données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-444

> CWE DETAILED DESCRIPTIONS

CWE-444: Inconsistent Interpretation of HTTP Requests - 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.

> RED HAT SECURITY ADVISORIES

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Red Hat Security Advisory: Red Hat build of Quarkus 3.27.4 release and security update
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Red Hat Security Advisory: Red Hat OpenShift Dev Spaces 3.28.2 Release.
Red Hat OpenShift Dev Spaces 3.28.2 has been released.
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Red Hat OpenShift Dev Spaces 3.29.0 has been released.
Red Hat Security Advisory: Red Hat Build of Apache Camel 4.18.1.P1 for Spring Boot release.
Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot patch release and security update is now available. Red Hat Product Security has rated this update as having a security impact of Important. A...
Red Hat Security Advisory: RHOAI 2.25.9 - Red Hat OpenShift AI
Updated images are now available for Red Hat OpenShift AI.
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.25 security update
A security update is now available for Red Hat JBoss Enterprise Application Platform 7.4. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerabilit...
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.4.25 security pdate
A security update is now available for Red Hat JBoss Enterprise Application Platform 7.4 for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of I...
Red Hat Security Advisory: Streams for Apache Kafka 3.2.1 release and security update
Streams for Apache Kafka 3.2.1 is now available from the Red Hat Customer Portal. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scorin...
Red Hat Security Advisory: RHOAI 2.25.11 - Red Hat OpenShift AI
Updated images are now available for Red Hat OpenShift AI.
Red Hat Security Advisory: Red Hat AMQ Broker 7.13.6 release and security update
Red Hat AMQ Broker 7.13.6 is now available from the Red Hat Customer Portal. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring Sy...
Red Hat Security Advisory: Red Hat AMQ Broker 7.14.1 release and security update
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Red Hat Security Advisory: AMQ Clients 2026.Q3
An update is now available for Red Hat AMQ Clients Red Hat Product Security has rated this update as having an impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which give...
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.1.16 security update
A security update is now available for Red Hat JBoss Enterprise Application Platform 7.1 for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of...
Red Hat Security Advisory: Red Hat JBoss Enterprise Application Platform 7.3.19 Update
An update is now available for Red Hat JBoss Enterprise Application Platform 7.3 for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of Important...
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.13 for OpenShift image security update
A new image is available for Red Hat Single Sign-On 7.6.13, running on OpenShift Container Platform 3.10 and 3.11, and 4.3.
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.13 security update
A security update is now available for Red Hat Single Sign-On 7.6 from the Customer Portal. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerabi...
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.13 security update on RHEL 7
New Red Hat Single Sign-On 7.6.13 packages are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having a security impact of none. A Common Vulnerability...
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.13 security update on RHEL 9
New Red Hat Single Sign-On 7.6.13 packages are now available for Red Hat Enterprise Linux 9. Red Hat Product Security has rated this update as having a security impact of none. A Common Vulnerability...
Red Hat Security Advisory: Red Hat Single Sign-On 7.6.13 security update on RHEL 8
New Red Hat Single Sign-On 7.6.13 packages are now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of none. A Common Vulnerability...
Red Hat Security Advisory: RHOAI 3.4.5 - Red Hat OpenShift AI
Updated images are now available for Red Hat OpenShift AI.

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Netty: HTTP/1.0 TE+CL Coexistence Bypasses Smuggling Sanitization

AFFECTED PACKAGES:
Unknown / Unknown
196 versions affected
ALIASES:
GHSA-xxqh-mfjm-7mv9

> HISTORIQUE DES MODIFICATIONS

Première apparition
13/05/2026 19:17
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') - The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow betwe...
Nouvelle valeur:
CWE-444: Inconsistent Interpretation of HTTP Requests - The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a c...
📊 ENRICHISSEMENT 01/06/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') - The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow betwe...
Total des modifications: 2 Dernière mise à jour: 6 days ago

> REFERENCES

https://github.com/netty/netty/security/advisories/GHSA-xxqh-mfjm-7mv9
https://github.com/netty/netty/security/advisories/GHSA-xxqh-mfjm-7mv9
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