According to its self-reported version number, HandlebarsJS on the remote server is prior to 3.0.8 or 4.x prior to 4.5.3. Therefore, it may be affected by a arbitrary code execution vulnerability permitting attackers to submit templates that execute aribtrary Javascript either server-side on a server processing Handlebars templates, or in a victims browser.

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

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Handlebars before 3.0.8 and 4.x before 4.5.3 is vulnerable to Arbitrary Code Execution. The lookup helper
    fails to properly validate templates, allowing attackers to submit templates that execute arbitrary
    JavaScript. This can be used to run arbitrary code on a server processing Handlebars templates or in a
    victim's browser (effectively serving as XSS). (CVE-2019-20920)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:5179 advisory.

    The org.ovirt.engine-root is a core component of oVirt.

    The following packages have been upgraded to a later upstream version: engine-db-query (1.6.2),     org.ovirt.engine-root (4.4.3.8), ovirt-engine-dwh (4.4.3.1), ovirt-engine-extension-aaa-ldap (1.4.2),     ovirt-engine-extension-logger-log4j (1.1.1), ovirt-engine-metrics (1.4.2.1), ovirt-engine-ui-extensions     (1.2.4), ovirt-log-collector (4.4.4), ovirt-web-ui (1.6.5), rhv-log-collector-analyzer (1.0.5), rhvm-     branding-rhv (4.4.6). (BZ#1866981, BZ#1879377)

    Security Fix(es):

    * nodejs-handlebars: lookup helper fails to properly validate templates allowing for arbitrary JavaScript     execution (CVE-2019-20920)

    * nodejs-handlebars: an endless loop while processing specially-crafted templates leads to DoS     (CVE-2019-20922)

    * nodejs-lodash: prototype pollution in zipObjectDeep function (CVE-2020-8203)

    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.

    Bug Fix(es):

    * send --nowait to libvirt when we collect qemu stats, to consume bz#1552092 (BZ#1613514)

    * Block moving HE hosts into different Data Centers and make HE host moved to different cluster     NonOperational after activation (BZ#1702016)

    * If an in-use MAC is held by a VM on a different cluster, the engine does not attempt to get the next     free MAC. (BZ#1760170)

    * Search backend cannot find VMs which name starts with a search keyword (BZ#1797717)

    * [Permissions] DataCenterAdmin role defined on DC level does not allow Cluster creation (BZ#1808320)

    * enable-usb-autoshare is always 0 in console.vv and usb-filter option is listed two times (BZ#1811466)

    * NumaPinningHelper is not huge pages aware, denies migration to suitable host (BZ#1812316)

    * Adding quota to group doesn't propagate to users (BZ#1822372)

    * Engine adding PCI-E elements on XML of i440FX SeaBIOS VM created from Q35 Template (BZ#1829691)

    * Live Migration Bandwidth unit is different from Engine configuration (Mbps) and VDSM (MBps) (BZ#1845397)

    * RHV-M shows successful operation if OVA export/import failed during qemu-img convert phase     (BZ#1854888)

    * Cannot hotplug disk reports libvirtError: Requested operation is not valid: Domain already contains a     disk with that address (BZ#1855305)

    * rhv-log-collector-analyzer --json fails with TypeError (BZ#1859314)

    * RHV 4.4 on AMD EPYC 7742 throws an NUMA related error on VM run (BZ#1866862)

    * Issue with dashboards creation when sending metrics to external Elasticsearch (BZ#1870133)

    * HostedEngine VM is broken after Cluster changed to UEFI (BZ#1871694)

    * [CNV&RHV]Notification about VM creation contain <UNKNOWN> string (BZ#1873136)

    * VM stuck in Migrating status after migration completed due to incorrect status reported by VDSM after     restart (BZ#1877632)

    * Use 4.5 as compatibility level for the Default DataCenter and the Default Cluster during installation     (BZ#1879280)

    * unable to create/add index pattern in step 5 from kcs articles#4921101 (BZ#1881634)

    * [CNV&RHV] Remove warning about no active storage domain for Kubevirt VMs (BZ#1883844)

    * Deprecate and remove ovirt-engine-api-explorer (BZ#1884146)

    * [CNV&RHV] Disable creating new disks for Kubevirt VM (BZ#1884634)

    * Require ansible-2.9.14 in ovirt-engine (BZ#1888626)

    Enhancement(s):

    * [RFE] Virtualization support for NVDIMM - RHV (BZ#1361718)

    * [RFE] - enable renaming HostedEngine VM name (BZ#1657294)

    * [RFE] Enabling Icelake new NIs - RHV (BZ#1745024)

    * [RFE] Show vCPUs and allocated memory in virtual machines summary (BZ#1752751)

    * [RFE] RHV-M Deployment/Install Needs it's own UUID (BZ#1825020)

    * [RFE] Destination Host in migrate VM dialog has to be searchable and sortable (BZ#1851865)

    * [RFE] Expose the reinstallation required flag of the hosts in the API (BZ#1856671)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Handlebars before 3.0.8 and 4.x before 4.5.3 is vulnerable to Arbitrary Code Execution. The lookup helper     fails to properly validate templates, allowing attackers to submit templates that execute arbitrary     JavaScript. This can be used to run arbitrary code on a server processing Handlebars templates or in a     victim's browser (effectively serving as XSS). (CVE-2019-20920)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Published	Updated	Severity
114095	HandlebarsJS < 3.0.8 Arbitrary Code Execution	Web App Scanning	Component Vulnerability	10/24/2023	10/25/2023	high
114096	HandlebarsJS 4.x < 4.5.3 Arbitrary Code Execution	Web App Scanning	Component Vulnerability	10/24/2023	10/25/2023	high
409461	SCA: security update for handlebars (GHSA-3cqr-58rm-57f8)	Tenable Cloud Security	SCA Checks	1/23/2025	7/2/2026	high
409461	SCA: security update for handlebars (GHSA-3cqr-58rm-57f8)	Tenable Self-Hosted Container Security	SCA Checks	1/23/2025	7/2/2026	high
143235	RHEL 8 : Red Hat Virtualization (RHSA-2020:5179)	Nessus	Red Hat Local Security Checks	11/24/2020	11/7/2024	high
250924	Linux Distros Unpatched Vulnerability : CVE-2019-20920	Nessus	Misc.	8/18/2025	8/18/2025	high

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