Prototype Pollution in Handlebars.js_project Handlebars.js
CVE-2019-19919
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…
Vulnerability class: Prototype Pollution
EPSS: 0.071 (93.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Handlebars.js_project Handlebars.js — versions 1.0.6, 1.0.7, 1.0.8
- Tenable Tenable.sc
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (x_refsource_CONFIRM, Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-19919?
- CVE-2019-19919 is a critical-severity vulnerability in Handlebars.js_project Handlebars.js, classified under Improperly Controlled Modification of Object Prototype Attributes (Prototype Pollution). CVSS score: 9.8/10. Published 2019-12-20.
- How severe is CVE-2019-19919?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2019-19919 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.