RLSA-2026:90895

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    RLSA-2026:90895

    Published: 29 Oct 2026Last Modified: 29 Oct 2026
    Upstream:
    CVE-2026-45186

    Summary: Important: thunderbird security, bug fix, and enhancement update

    Details: Mozilla Thunderbird is a standalone mail and newsgroup client. Security Fix(es): * libexpat: denial of service via crafted XML input (CVE-2026-45186) Bug Fix(es) and Enhancement(s): * Thunderbird ESR 153 rebase [rhel-10.2.z] (JIRA:Rocky Linux-175207) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

    References: https://errata.rockylinux.org/RLSA-2026:90895, https://bugzilla.redhat.com/show_bug.cgi?id=2468575, https://access.redhat.com/errata/RHSA-2026:90895

    Affected packages

    Package

    Name: thunderbird

    Purl: pkg:rpm/rocky-linux/thunderbird?distro=rocky-linux-10&epoch=0

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -0:153.5.0-1.el10_2

    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
    RLSA-2026:90895 | CVE-DB