Detections
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RockyLinux 10 : thunderbird (RLSA-2026:90895)

high Nessus Plugin ID 373661

Synopsis

The remote RockyLinux host is missing a security update.

Description

The remote RockyLinux 10 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2026:90895 advisory.

 * 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)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected thunderbird, thunderbird-debuginfo and / or thunderbird-debugsource packages.

See Also

https://bugzilla.redhat.com/show_bug.cgi?id=2468575

https://errata.rockylinux.org/RLSA-2026:90895

Plugin Details

Severity: High

ID: 373661

File Name: rocky_linux_RLSA-2026-90895.nasl

Version: 1.1

Type: Local

Published: 10/29/2026

Updated: 10/29/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.63

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-45186

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:rocky:linux:10, p-cpe:/a:rocky:linux:thunderbird-debuginfo, p-cpe:/a:rocky:linux:thunderbird-debugsource, p-cpe:/a:rocky:linux:thunderbird

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RockyLinux/release, Host/RockyLinux/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/29/2026

Vulnerability Publication Date: 5/10/2026

Reference Information

CVE: CVE-2026-45186