CVE-2026-34483
Apache Tomcat: Incomplete escaping of JSON access logs
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.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:NIntegrityNone
A:NAvailabilityNone
Weaknesses
Affected Products
Red Hat Inc.
commercial·USaka red hat
Apache Software Foundation
oss-project·USaka apache foundation
apache
oss-project·USaka apache httpd, apache http server
ООО «Ред Софт»
commercial·RUaka red soft
АО «ИВК»
commercial·RUaka ivk
and 1 more affected products View all →
Exploitability
Official Patch Available
References
https://lists.apache.org/thread/j1w7304yonlr8vo1tkb5nfs7od1y228b
lists.apache.org
http://www.openwall.com/lists/oss-security/2026/04/09/26
openwall.com
https://github.com/apache/tomcat
github.com
and 5 more references View all →
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