BIT-tomcat-2026-34483

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    BIT-tomcat-2026-34483

    Published: 11 Sept 2026Last Modified: 11 Sept 2026

    Summary: Apache Tomcat: Incomplete escaping of JSON access logs

    Details: Improper Encoding or Escaping of Output vulnerability in the JsonAccessLogValve component of Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0 through 11.0.20, from 10.1.0 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.

    References: http://www.openwall.com/lists/oss-security/2026/04/09/26, https://lists.apache.org/thread/j1w7304yonlr8vo1tkb5nfs7od1y228b, https://nvd.nist.gov/vuln/detail/CVE-2026-34483

    Affected packages

    Package

    Name: tomcat

    Purl: pkg:bitnami/tomcat

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 9.0.40
    Fixed -9.0.117

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    BIT-tomcat-2026-34483 | CVE-DB