BIT-tomcat-2026-24734

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    BIT-tomcat-2026-24734

    Published: 20 Feb 2026Last Modified: 10 Sept 2026

    Summary: Apache Tomcat Native, Apache Tomcat: OCSP revocation bypass

    Details: Improper Input Validation vulnerability in Apache Tomcat Native, Apache Tomcat. When using an OCSP responder, Tomcat Native (and Tomcat's FFM port of the Tomcat Native code) did not complete verification or freshness checks on the OCSP response which could allow certificate revocation to be bypassed. This issue affects Apache Tomcat Native: from 1.3.0 through 1.3.4, from 2.0.0 through 2.0.11; Apache Tomcat: from 11.0.0 through 11.0.17, from 10.1.0 through 10.1.51, from 9.0.83 through 9.0.114. The following versions were EOL at the time the CVE was created but are known to be affected: from 1.1.23 through 1.1.34, from 1.2.0 through 1.2.39. Older EOL versions are not affected. Apache Tomcat Native users are recommended to upgrade to versions 1.3.5 or later or 2.0.12 or later, which fix the issue. Apache Tomcat users are recommended to upgrade to versions 11.0.18 or later, 10.1.52 or later or 9.0.115 or later which fix the issue.

    References: https://lists.apache.org/thread/292dlmx3fz1888v6v16221kpozq56gml, https://nvd.nist.gov/vuln/detail/CVE-2026-24734, https://access.redhat.com/errata/RHSA-2026:19054, https://access.redhat.com/errata/RHSA-2026:26323, https://access.redhat.com/errata/RHSA-2026:5611, https://access.redhat.com/errata/RHSA-2026:5612, https://access.redhat.com/errata/RHSA-2026:6569, https://access.redhat.com/errata/RHSA-2026:8334, https://access.redhat.com/security/cve/CVE-2026-24734, https://bugzilla.redhat.com/show_bug.cgi?id=2440426, https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-24734.json, https://access.redhat.com/errata/RHSA-2026:36790

    Affected packages

    Package

    Name: tomcat

    Purl: pkg:bitnami/tomcat

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 9.0.83
    Fixed -9.0.115

    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-2026-24734 | CVE-DB