> CVE-2026-34483

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PUBLISHED
2026-04-09 20:16
MODIFIED
2026-04-09 20:16
EPSS (Prob. Exploit)
0.47%
Top 59.2%
DATA SOURCES:
NVD 🔗 2026-04-09 RED HAT 🔗 2026-04-12 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-08 GITHUB 🔗 2026-11-05 OSV 🔗 2026-11-02

> DESCRIPTION

Improper Encoding or Escaping of Output vulnerability in the JsonAccessLogValve component of Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.20, from 10.1.0-M1 through 10.1.53, from 9.0.40 through 9.0.116. Users are recommended to upgrade to version 11.0.21, 10.1.54 or 9.0.117 , which fix the issue.

> AFFECTED_PRODUCTS

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

> WEAKNESSES

CWE-116

> CWE DETAILED DESCRIPTIONS

CWE-116: Improper Encoding or Escaping of Output - The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: Red Hat JBoss Web Server 6.2.3 release and security update
Red Hat JBoss Web Server 6.2.3 is now available for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, and Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a...
Red Hat Security Advisory: Red Hat JBoss Web Server 6.2.3 release and security update
Red Hat JBoss Web Server 6.2.3 zip release is now available for Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 10, and Windows Server. Red Hat Product Security has r...

> RED HAT SEVERITY ASSESSMENT

THREAT SEVERITY
Low

> GITHUB SECURITY ADVISORY

GHSA-rv64-5gf8-9qq8 HIGH

Apache Tomcat has an Improper Encoding or Escaping of Output vulnerability in the JsonAccessLogValve

AFFECTED PACKAGES:
MAVEN / org.apache.tomcat.embed:tomcat-embed-core
>= 11.0.0-M1, < 11.0.21
Fixed in: 11.0.21
MAVEN / org.apache.tomcat.embed:tomcat-embed-core
>= 10.1.0-M1, < 10.1.54
Fixed in: 10.1.54
MAVEN / org.apache.tomcat.embed:tomcat-embed-core
>= 9.0.40, < 9.0.116
Fixed in: 9.0.116
MAVEN / org.apache.tomcat:tomcat
>= 11.0.0-M1, < 11.0.21
Fixed in: 11.0.21
MAVEN / org.apache.tomcat:tomcat
>= 10.1.0-M1, < 10.1.54
Fixed in: 10.1.54
MAVEN / org.apache.tomcat:tomcat
>= 9.0.40, < 9.0.116
Fixed in: 9.0.116
MAVEN / org.apache.tomcat:tomcat-catalina
>= 11.0.0-M1, < 11.0.21
Fixed in: 11.0.21
MAVEN / org.apache.tomcat:tomcat-catalina
>= 10.1.0-M1, < 10.1.54
Fixed in: 10.1.54
MAVEN / org.apache.tomcat:tomcat-catalina
>= 9.0.40, < 9.0.116
Fixed in: 9.0.116

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

Apache Tomcat: Incomplete escaping of JSON access logs

AFFECTED PACKAGES:
Unknown / Unknown
ALIASES:
BIT-tomcat-2026-34483, GHSA-rv64-5gf8-9qq8

> HISTORIQUE DES MODIFICATIONS

Première apparition
09/04/2026 20:16
Source: NVD
📊 ENRICHISSEMENT 01/05/2026 06:01
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-116: Improper Encoding or Escaping of Output - The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done in...
📊 ENRICHISSEMENT 12/04/2026 05:01
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 10/04/2026 23:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 10/04/2026 22:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 10/04/2026 21:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 10/04/2026 20:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 10/04/2026 19:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 10/04/2026 18:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 10/04/2026 17:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 10/04/2026 16:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 10/04/2026 15:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 10/04/2026 14:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 10/04/2026 13:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
{ "severity_scale": null, "threat_severity": "Low" }
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 10/04/2026 12:30
REDHAT
Champ modifié: Sévérité Red Hat
Ancienne valeur:
N/A
Nouvelle valeur:
{ "threat_severity": "Low", "severity_scale": null }
📊 ENRICHISSEMENT 10/04/2026 12:30
REDHAT
Champ modifié: Red Hat
Ancienne valeur:
Non
Nouvelle valeur:
Oui
Total des modifications: 15 Dernière mise à jour: 6 months ago

> REFERENCES

https://lists.apache.org/thread/j1w7304yonlr8vo1tkb5nfs7od1y228b
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