Detections
Analytics
Unity Linux 20.1050a / 20.1060a / 20.1070a Security Update: libxml2 (UTSA-2026-130064)
high Nessus Plugin ID 365806
Synopsis
The Unity Linux host is missing one or more security updates.Description
The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-130064 advisory.A flaw was found in libxml2 with Python bindings enabled. A remote attacker could exploit this vulnerability by providing a specially crafted XML document containing a Document Type Definition (DTD) with enumerated attribute values. This triggers a double-free error in the SAX attributeDecl callback handler, where a string is freed twice. This flaw can lead to a denial of service (DoS) due to a reproducible crash in Python applications using the libxml2 SAX bindings.
Tenable has extracted the preceding description block directly from the Unity Linux 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 libxml2 package.See Also
https://access.redhat.com/security/cve/CVE-2026-74860
Plugin Details
Severity: High
ID: 365806
File Name: unity_linux_UTSA-2026-130064.nasl
Version: 1.1
Type: Local
Published: 10/14/2026
Updated: 10/14/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5
Percentile: 93.19
CVSS v2
Risk Factor: High
Base Score: 7.1
Temporal Score: 5.3
Vector: CVSS2#AV:N/AC:H/Au:S/C:C/I:C/A:C
CVSS Score Source: CVE-2026-74860
CVSS v3
Risk Factor: High
Base Score: 8.5
Temporal Score: 7.4
Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
Required KB Items: Host/local_checks_enabled, Host/cpu, Host/UOS-Server/release, Host/UOS-Server/rpm-list
Exploit Ease: No known exploits are available
Patch Publication Date: 10/15/2026
Vulnerability Publication Date: 9/8/2026
Reference Information
CVE: CVE-2026-74860