CVE-2019-20920

Public Exploit

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).

Category

8.1
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.52%
Third-Party Advisory snyk.io Third-Party Advisory npmjs.com Third-Party Advisory npmjs.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://www.npmjs.com/advisories/1316 third party advisory exploit
https://www.npmjs.com/advisories/1324 third party advisory
https://snyk.io/vuln/SNYK-JS-HANDLEBARS-534478 third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-20920?
CVE-2019-20920 has been scored as a high severity vulnerability.
How to fix CVE-2019-20920?
To fix CVE-2019-20920, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-20920 being actively exploited in the wild?
It is possible that CVE-2019-20920 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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