CVE-2019-20920 - CVE House
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Status published High CVE-2019-20920

Handlebars before 3.0.8 and 4.x before 4.5.3 is vulnerable to...

Vulnerability 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).

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

More from handlebarsjs

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CVE-2019-20922
Handlebars before 4.4.5 allows Regular Expression Denial of Service (ReDoS)...
High 7.5

Affected Vendor

handlebarsjs

View all reports →

Affected Software

handlebars
Vulnerable Versions:
0, 4.0.0

Timeline

Official Publish: September 30th, 2020
Last Modified: August 5th, 2024
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:L

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.