Detections
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Unity Linux 20.1060e / 20.1070e Security Update: rubygem-nokogiri (UTSA-2026-016661)
medium Nessus Plugin ID 316289
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-2026-016661 advisory.Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. In Nokogiri before version 1.11.0.rc4 there is an XXE vulnerability. XML Schemas parsed by Nokogiri::XML::Schema are trusted by default, allowing external resources to be accessed over the network, potentially enabling XXE or SSRF attacks. This behavior is counter to the security policy followed by Nokogiri maintainers, which is to treat all input as untrusted by default whenever possible. This is fixed in Nokogiri version 1.11.0.rc4.
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 rubygem-nokogiri package.See Also
http://www.nessus.org/u?01a8f8f1
Plugin Details
Severity: Medium
ID: 316289
File Name: unity_linux_UTSA-2026-016661.nasl
Version: 1.1
Type: Local
Published: 5/22/2026
Updated: 5/22/2026
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 1.4
CVSS v2
Risk Factor: Medium
Base Score: 4
Temporal Score: 3
Vector: CVSS2#AV:N/AC:L/Au:S/C:P/I:N/A:N
CVSS Score Source: CVE-2020-26247
CVSS v3
Risk Factor: Medium
Base Score: 4.3
Temporal Score: 3.8
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
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: 5/8/2026
Vulnerability Publication Date: 12/30/2020
Reference Information
CVE: CVE-2020-26247