CVE-2026-34483

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.

PUBLISHED Reserved 2026-03-30 | Published 2026-04-09 | Updated 2026-04-10 | Assigner apache

Problem types

CWE-116 Improper Encoding or Escaping of Output

Product status

Credits

Bartlomiej Dmitruk, striga.ai finder

References

www.openwall.com/lists/oss-security/2026/04/09/26

lists.apache.org/thread/j1w7304yonlr8vo1tkb5nfs7od1y228b vendor-advisory

cve.org (CVE-2026-34483)

nvd.nist.gov (CVE-2026-34483)

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