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Rocky Linux 8 [CIQ] Security Update: expat / expat-debuginfo / expat-debugsource / expat-devel Multiple Vulnerabilities (crlsa-2026_72448)

high Nessus Plugin ID 359521

Synopsis

The Rocky Linux host is missing one or more security updates.

Description

The Rocky Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-2026_72448 advisory.

 * expat: Expat: Denial of Service via quadratic complexity in attribute processing (CVE-2026-66046)

 * expat: Expat: XML Injection via Malformed UTF-16 Input (CVE-2026-93990)

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

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

Solution

Update the affected packages based on the guidance in CIQ advisory crlsa-2026_72448.

See Also

https://access.redhat.com/errata/RHSA-2026:72448

https://bugzilla.redhat.com/show_bug.cgi?id=2517901

https://bugzilla.redhat.com/show_bug.cgi?id=2538967

https://errata.build.resf.org/RLSA-2026:72448

http://www.nessus.org/u?9aad9e88

http://www.nessus.org/u?d8f11958

Plugin Details

Severity: High

ID: 359521

File Name: ciq_rocky_linux_8_crlsa-2026_72448.nasl

Version: 1.1

Type: Local

Published: 10/1/2026

Updated: 10/1/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.19

Vendor

Vendor Severity: Unknown

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2026-93990

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:H/A:N

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

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 7.7

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Vulnerability Information

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/RockyLinux/release, Host/RockyLinux/rpm-list, Host/OS/extended-third-party

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/29/2026

Vulnerability Publication Date: 8/18/2026

Reference Information

CVE: CVE-2026-66046, CVE-2026-93990