HIGHMaven →
Apache Tomcat has an Improper Encoding or Escaping of Output vulnerability in the JsonAccessLogValve
Apache Tomcat has an Improper Encoding or Escaping of Output vulnerability in the JsonAccessLogValve
Affected packages
- org.apache.tomcat.embed:tomcat-embed-core— 9.0.40 → 9.0.116
- org.apache.tomcat:tomcat— 9.0.40 → 9.0.116
- org.apache.tomcat:tomcat-catalina— 9.0.40 → 9.0.116
Exploit signal
- Known exploited (CISA KEV)
- No
- EPSS score
- —
- EPSS percentile
- —
EPSS is the probability a CVE is exploited in the wild; percentile is its rank among all CVEs.
Sources
- https://nvd.nist.gov/vuln/detail/CVE-2026-34483
- https://github.com/apache/tomcat
- https://lists.apache.org/thread/j1w7304yonlr8vo1tkb5nfs7od1y228b
- http://www.openwall.com/lists/oss-security/2026/04/09/26
Structured record: https://osv.dev/vulnerability/GHSA-rv64-5gf8-9qq8
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