CVE-2026-34483

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CVSS 3.1

7.5 high

EPSS

<1%p39

Published

Apr 9, 2026 (Apr 9, 2026)

Modified

Jun 17, 2026

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.

Vendors: apache
Products: tomcat
Weakness: CWE-116
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

NVD CVE.org GitHub PoCs EPSS (0.5%)

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