Prototype Pollution in Handlebars Affecting npm Products
CVE-2019-19919
Key Information:
- Vendor
Handlebars.js Project
- Status
- Vendor
- CVE Published:
- 20 December 2019
Badges
What is CVE-2019-19919?
Handlebars, a popular templating engine for JavaScript, is susceptible to a prototype pollution vulnerability which can enable remote code execution. This issue arises in versions earlier than 4.3.0, allowing an attacker to manipulate an object's proto and defineGetter properties through specially crafted payloads. Such manipulation may lead to arbitrary code execution in the context of the vulnerable application, posing significant security risks.
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
References
EPSS Score
16% chance of being exploited in the next 30 days.
CVSS V3.1
Timeline
- 🟡
Public PoC available
- 👾
Exploit known to exist
Vulnerability published
Vulnerability Reserved