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CVE-2019-20920

nvd nist
Published: Sep 30, 2020Modified: Jun 17, 2026

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8.1
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:L
Exploitability: 2.2 / Impact: 5.3
Source: NVD

Description

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).

Affected (2)

Handlebarsjs
1 product
Handlebars
Configuration A
2 vulnerable
Vulnerable SoftwareAffected Versions
Handlebarsjs
Handlebars
Before 3.0.8
Handlebars
From 4.0.0 to 4.5.3

Related CWEs

CWE-94
Improper Control of Generation of Code ('Code Injection')
The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

References (6)

Source: cve@mitre.org
Third Party Advisory
Source: cve@mitre.org
ExploitThird Party Advisory
Source: cve@mitre.org
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
ExploitThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

Timeline

No history available yet.