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.
References
| Link | Resource |
|---|---|
| https://lists.apache.org/thread/j1w7304yonlr8vo1tkb5nfs7od1y228b | Mailing List Vendor Advisory |
| http://www.openwall.com/lists/oss-security/2026/04/09/26 | Mailing List Third Party Advisory |
Configurations
Configuration 1 (hide)
|
History
14 Apr 2026, 12:46
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Apache
Apache tomcat |
|
| CPE | cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* | |
| References | () https://lists.apache.org/thread/j1w7304yonlr8vo1tkb5nfs7od1y228b - Mailing List, Vendor Advisory | |
| References | () http://www.openwall.com/lists/oss-security/2026/04/09/26 - Mailing List, Third Party Advisory |
10 Apr 2026, 21:16
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 7.5 |
10 Apr 2026, 00:16
| Type | Values Removed | Values Added |
|---|---|---|
| References |
|
09 Apr 2026, 20:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-09 20:16
Updated : 2026-04-14 12:46
NVD link : CVE-2026-34483
Mitre link : CVE-2026-34483
CVE.ORG link : CVE-2026-34483
JSON object : View
Products Affected
apache
- tomcat
CWE
CWE-116
Improper Encoding or Escaping of Output