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CVE-2026-34483

7.5 high SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 7.5 · apacheNVD modified 2026-10-26 21:10

Affected (CPE criteria) 1

  • cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:*

References 2