// For flags

CVE-2021-23383

Prototype Pollution

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

5
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

The package handlebars before 4.7.7 are vulnerable to Prototype Pollution when selecting certain compiling options to compile templates coming from an untrusted source.

El package handlebars versiones anteriores a 4.7.7, son vulnerables a una Contaminación de Prototipos al seleccionar determinadas opciones de compilación para agrupar plantillas que provienen de una fuente no confiable

A flaw was found in nodejs-handlebars. A unescaped value in the JavaScriptCompiler.prototype.depthedLookup function allows an attacker, who can provide untrusted handlebars templates, to execute arbitrary code in the javascript system (e.g. browser or server) when the template is compiled with the compat:true option. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

*Credits: Francois Lajeunesse-Robert
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-01-08 CVE Reserved
  • 2021-05-04 CVE Published
  • 2021-06-28 First Exploit
  • 2024-01-18 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-94: Improper Control of Generation of Code ('Code Injection')
  • CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Handlebarsjs
Search vendor "Handlebarsjs"
 Handlebars
Search vendor "Handlebarsjs" for product "Handlebars"
 < 4.7.7
Search vendor "Handlebarsjs" for product "Handlebars" and version " < 4.7.7"
node.js
Affected
Netapp
Search vendor "Netapp"
 E-series Performance Analyzer
Search vendor "Netapp" for product "E-series Performance Analyzer"
--
Affected