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Linux Distros Unpatched Vulnerability : CVE-2026-33937

critical Nessus Plugin ID 304157

Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

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

 - Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, `Handlebars.compile()` accepts a pre-parsed AST object in addition to a template string. The `value` field of a `NumberLiteral` AST node is emitted directly into the generated JavaScript without quoting or sanitization. An attacker who can supply a crafted AST to `compile()` can therefore inject and execute arbitrary JavaScript, leading to Remote Code Execution on the server. Version 4.7.9 fixes the issue. Some workarounds are available. Validate input type before calling `Handlebars.compile()`; ensure the argument is always a `string`, never a plain object or JSON-deserialized value. Use the Handlebars runtime-only build (`handlebars/runtime`) on the server if templates are pre-compiled at build time;
 `compile()` will be unavailable. (CVE-2026-33937)

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

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2026-33937

https://security-tracker.debian.org/tracker/CVE-2026-33937

Plugin Details

Severity: Critical

ID: 304157

File Name: unpatched_CVE_2026_33937.nasl

Version: 1.1

Type: local

Agent: unix

Family: Misc.

Published: 3/28/2026

Updated: 3/28/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2026-33937

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9

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

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, p-cpe:/a:redhat:enterprise_linux:grafana-azure-monitor, p-cpe:/a:centos:centos:grafana-opentsdb, p-cpe:/a:centos:centos:grafana-cloudwatch, p-cpe:/a:centos:centos:firefox-x11, p-cpe:/a:redhat:enterprise_linux:389-ds-base-devel, p-cpe:/a:redhat:enterprise_linux:389-ds-base-legacy-tools, p-cpe:/a:redhat:enterprise_linux:grafana-postgres, p-cpe:/a:centos:centos:grafana-prometheus, cpe:/o:debian:debian_linux:12.0, p-cpe:/a:centos:centos:grafana-graphite, p-cpe:/a:redhat:enterprise_linux:grafana-elasticsearch, p-cpe:/a:redhat:enterprise_linux:389-ds-base-libs, p-cpe:/a:redhat:enterprise_linux:grafana-opentsdb, p-cpe:/a:redhat:enterprise_linux:grafana-prometheus, p-cpe:/a:redhat:enterprise_linux:mozjs60, cpe:/o:redhat:enterprise_linux:9, p-cpe:/a:centos:centos:389-ds-base-libs, p-cpe:/a:centos:centos:grafana-influxdb, p-cpe:/a:centos:centos:grafana-loki, p-cpe:/a:redhat:enterprise_linux:thunderbird, cpe:/o:centos:centos:8, p-cpe:/a:centos:centos:grafana-selinux, p-cpe:/a:centos:centos:mozjs60, p-cpe:/a:redhat:enterprise_linux:python3-lib389, p-cpe:/a:centos:centos:grafana-mysql, p-cpe:/a:redhat:enterprise_linux:389-ds-base-snmp, p-cpe:/a:redhat:enterprise_linux:grafana-mssql, p-cpe:/a:redhat:enterprise_linux:grafana-selinux, cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:10, cpe:/o:debian:debian_linux:13.0, p-cpe:/a:centos:centos:grafana-azure-monitor, p-cpe:/a:centos:centos:389-ds-base-snmp, p-cpe:/a:redhat:enterprise_linux:grafana-loki, p-cpe:/a:redhat:enterprise_linux:grafana, p-cpe:/a:centos:centos:389-ds-base, p-cpe:/a:centos:centos:mozjs60-devel, p-cpe:/a:debian:debian_linux:node-handlebars, p-cpe:/a:centos:centos:cockpit-389-ds, p-cpe:/a:centos:centos:firefox, p-cpe:/a:redhat:enterprise_linux:grafana-graphite, p-cpe:/a:redhat:enterprise_linux:grafana-mysql, p-cpe:/a:redhat:enterprise_linux:389-ds-base, p-cpe:/a:redhat:enterprise_linux:cockpit-389-ds, p-cpe:/a:redhat:enterprise_linux:firefox-x11, p-cpe:/a:redhat:enterprise_linux:mozjs60-devel, cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:grafana-stackdriver, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:centos:centos:python3-lib389, p-cpe:/a:redhat:enterprise_linux:grafana-cloudwatch, p-cpe:/a:centos:centos:389-ds-base-legacy-tools, p-cpe:/a:centos:centos:thunderbird, p-cpe:/a:redhat:enterprise_linux:grafana-influxdb, cpe:/o:debian:debian_linux:14.0, p-cpe:/a:centos:centos:grafana-elasticsearch, p-cpe:/a:centos:centos:grafana-postgres, p-cpe:/a:centos:centos:grafana, p-cpe:/a:redhat:enterprise_linux:firefox, p-cpe:/a:centos:centos:389-ds-base-devel, p-cpe:/a:redhat:enterprise_linux:grafana-stackdriver, p-cpe:/a:centos:centos:grafana-mssql

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 3/27/2026

Reference Information

CVE: CVE-2026-33937