CVE-2019-19919
Prototype Pollution in handlebars
9.8
CRITICAL
CVSS 3.1
EPSS 24.8%
Description
Versions of handlebars prior to 4.3.0 are vulnerable to Prototype Pollution leading to Remote Code Execution. Templates may alter an Object's __proto__ and __defineGetter__ properties, which may allow an attacker to execute arbitrary code through crafted payloads.
How to fix CVE-2019-19919
To remediate CVE-2019-19919, upgrade the affected package to a fixed version below.
- Debian/node-handlebars—upgrade to 3:4.5.3-1 or later
- —upgrade to 4.3.0 or later
- —no fix listed
Is CVE-2019-19919 being exploited?
Moderate — EPSS is 24.8%. Track this CVE but it's not at the top of the prioritisation list.
Affected packages (3)
- from 0, < 3:4.5.3-1
- >= 4.0.0, < 4.3.0
- >= 0.3.3.5, <= 0.3.3.8
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |