What is CVE-2019-20922?

CVE-2019-20922 is a high-severity vulnerability in Handlebarsjs Handlebars, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2020-09-30.

How severe is CVE-2019-20922?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Handlebarsjs Handlebars

CVE-2019-20922

Handlebars before 4.4.5 allows Regular Expression Denial of Service (ReDoS) because of eager matching. The parser may be forced into an endless loop while processing crafted templates. This may allow attackers to exhaust system resources.

Vulnerability class: DoS (Denial of Service)

EPSS: 0.038 (88.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Handlebarsjs Handlebars
N/a — versions n/a

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2019-20922?: CVE-2019-20922 is a high-severity vulnerability in Handlebarsjs Handlebars, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2020-09-30.
How severe is CVE-2019-20922?: High severity. CVSS v3 base score is 7.5 out of 10.