> CVE-2026-4249 [HIGH]

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PUBLISHED
2026-07-06 11:16
MODIFIED
2026-07-06 11:16
CVSS_SCORE V3
8.6
EPSS (Prob. Exploit)
0.56%
Top 54.3%
DATA SOURCES:
NVD 🔗 2026-07-06 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-10-25 GITHUB 🔗 2026-11-05

> DESCRIPTION

The throttling event handling mechanism in multiple WSO2 products accepts user-supplied JSON payloads without sufficient validation of their structure and content. This allows an unauthenticated remote attacker to inject malicious JSON data that can lead to a persistent denial of service condition. Successful exploitation of this vulnerability can disrupt the API Gateway, preventing legitimate API traffic from being processed and impacting complete service availability. The denial of service is persistent, requiring manual intervention to restore normal operations.

> 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:N/A:H
EXPLOITABILITY
3.9
IMPACT
4.0

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
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
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
High (H)
Interruption totale du service possible

> RÉSUMÉ DES IMPACTS

Confidentialité
None
Aucune divulgation d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
High
Interruption totale du service possible

> WEAKNESSES

CWE-707

> CWE DETAILED DESCRIPTIONS

CWE-707: Improper Neutralization - The product does not ensure or incorrectly ensures that structured messages or data are well-formed and that certain security properties are met before being used when received from an upstream component, or before being sent to a downstream component.

> GITHUB SECURITY ADVISORY

GHSA-fv25-8xcx-gqjc HIGH

Apache Tomcat - WebSocket authentication header exposure

AFFECTED PACKAGES:
MAVEN / org.apache.tomcat:tomcat-catalina
>= 11.0.0-M1, < 11.0.22
Fixed in: 11.0.22
MAVEN / org.apache.tomcat:tomcat-catalina
>= 10.1.0-M1, < 10.1.55
Fixed in: 10.1.55
MAVEN / org.apache.tomcat:tomcat-catalina
< 9.0.118
Fixed in: 9.0.118
MAVEN / org.apache.tomcat:tomcat
>= 11.0.0-M1, < 11.0.22
Fixed in: 11.0.22
MAVEN / org.apache.tomcat:tomcat
>= 10.1.0-M1, < 10.1.55
Fixed in: 10.1.55
MAVEN / org.apache.tomcat:tomcat
< 9.0.118
Fixed in: 9.0.118
MAVEN / org.apache.tomcat.embed:tomcat-embed-core
>= 11.0.0-M1, < 11.0.22
Fixed in: 11.0.22
MAVEN / org.apache.tomcat.embed:tomcat-embed-core
>= 10.1.0-M1, < 10.1.55
Fixed in: 10.1.55
MAVEN / org.apache.tomcat.embed:tomcat-embed-core
< 9.0.118
Fixed in: 9.0.118

> HISTORIQUE DES MODIFICATIONS

Première apparition
06/07/2026 11:16
Source: NVD
📊 ENRICHISSEMENT 01/11/2026 06:59
CWE
Champ modifié: Description CWE
Ancienne valeur:
CWE-707: Improper Neutralization - The product does not ensure or incorrectly ensures that structured messages or data are well-formed and that certain security properties are met before being read fr...
Nouvelle valeur:
CWE-707: Improper Neutralization - The product does not ensure or incorrectly ensures that structured messages or data are well-formed and that certain security properties are met before being used wh...
📊 ENRICHISSEMENT 01/08/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-707: Improper Neutralization - The product does not ensure or incorrectly ensures that structured messages or data are well-formed and that certain security properties are met before being read fr...
Total des modifications: 2 Dernière mise à jour: 5 days ago

> REFERENCES

https://security.docs.wso2.com/en/latest/security-announcements/security-advisor...
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