K000161597: Apache Tomcat vulnerability CVE-2026-34483

Security Advisory 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...

Apache Tomcat: Apache Tomcat: Information disclosure due to improper encoding in JsonAccessLogValve

A flaw was found in the JsonAccessLogValve component of Apache Tomcat. This improper encoding or escaping of output vulnerability could allow an attacker to inject specially crafted data into log files. This could lead to information disclosure or other unintended consequences when the logs are...

Apache Tomcat: Apache Tomcat: Information disclosure due to improper encoding in JsonAccessLogValve

A flaw was found in the JsonAccessLogValve component of Apache Tomcat. This improper encoding or escaping of output vulnerability could allow an attacker to inject specially crafted data into log files. This could lead to information disclosure or other unintended consequences when the logs are...

Atlassian Confluence 8.9.0 < 9.2.20 / 9.3.1 < 10.2.11 (CONFSERVER-103708)

The version of Atlassian Confluence Server running on the remote host is affected by a vulnerability as referenced in the CONFSERVER-103708 advisory. - This Improper Encoding or Escaping of Output vulnerability allows an unauthenticated attacker to potentially disclose sensitive information via t...

Improper Encoding org.apache.tomcat:tomcat-catalina Dependency in Jira Software Data Center

This High severity Improper Encoding vulnerability known as CVE-2026-34483 was introduced in version 11.3.0. This Improper Encoding or Escaping of Output vulnerability, with a CVSS Score of 7.5 and a CVSS Vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N allows an unauthenticated attacker to...

Improper Encoding org.apache.tomcat:tomcat-catalina Dependency in Confluence Data Center

This High severity Improper Encoding vulnerability known as CVE-2026-34483 was introduced in versions 8.9.0, 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0, and 10.2.0. This Improper Encoding or Escaping of Output vulnerability, with a CVSS Score of 7.5 and a CVSS Vector of...

SUSE CVE-2026-34483

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 o...

CVE-2026-34483

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 o...

CVE-2026-34483

CVE-2026-34483 is an Improper Encoding or Escaping of Output vulnerability in the JsonAccessLogValve component of Apache Tomcat. Affected versions: Tomcat 11.0.0-M1 through 11.0.20, 10.1.0-M1 through 10.1.53, and 9.0.40 through 9.0.116. Exploitation concerns are not detailed in the provided docum...

Improper Encoding or Escaping of Output

Overview org.apache.tomcat.embed:tomcat-embed-core is a Core Tomcat implementation. Affected versions of this package are vulnerable to Improper Encoding or Escaping of Output in JsonAccessLogValve, which relies on an unescaped append in generating JSON logs. If non-default values are used for th...