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Vulnerabilities / CVE-2019-19919

critical

CVE-2019-19919

nodejs-handlebars: prototype pollution leading to remote code execution via crafted payloads

Published Modified CWE 1321
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GHSA9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat4.2CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Trivy's own label is CRITICAL. Rated critical by NVD, GHSA, Ruby Advisory DB. Rated lower by Red Hat (low).

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.

Affected packages and fixed versions

SourcePackageFixed in
npm::GitHub Security Advisory npmhandlebars4.3.0, 3.0.8
rubygems::GitHub Security Advisory RubyGemsbootstrap-wysihtml5-railsno fix listed
rubygems::Ruby Advisory Databasebootstrap-wysihtml5-railsno fix listed
chainguardcode-server, commercial-gitlab-rails-ee-19.2, commercial-gitlab-rails-ee-19.3 and 35 more0 and 1 more
debian 10node-handlebars3:4.1.0-1+deb10u1
debian 11node-handlebars3:4.5.3-1
debian 12node-handlebars3:4.5.3-1
debian 13node-handlebars3:4.5.3-1
debian 14node-handlebars3:4.5.3-1
echonode-handlebars3:4.5.3-1
Red Hatkibanano fix listed
seal npm::Seal Security Database@seal-security/handlebars, handlebars4.1.2-sp999
Show all 51 entries from 13 sources
SourcePackageFixed in
npm::GitHub Security Advisory npmhandlebars4.3.0, 3.0.8
rubygems::GitHub Security Advisory RubyGemsbootstrap-wysihtml5-railsno fix listed
rubygems::Ruby Advisory Databasebootstrap-wysihtml5-railsno fix listed
chainguardcode-server0
chainguardcommercial-gitlab-rails-ee-19.20
chainguardcommercial-gitlab-rails-ee-19.30
chainguardcommercial-gitlab-rails-ee-19.40
chainguardcommercial-gitlab-rails-ee-fips-19.20
chainguardcommercial-gitlab-rails-ee-fips-19.30
chainguardcommercial-gitlab-rails-ee-fips-19.40
chainguardgitlab-rails-ce-18.10
chainguardgitlab-rails-ce-18.110
chainguardgitlab-rails-ce-18.20
chainguardgitlab-rails-ce-18.30
chainguardgitlab-rails-ce-18.40
chainguardgitlab-rails-ce-18.50
chainguardgitlab-rails-ce-18.60
chainguardgitlab-rails-ce-18.70
chainguardgitlab-rails-ce-18.80
chainguardgitlab-rails-ce-18.90
chainguardgitlab-rails-ce-19.00
chainguardgitlab-rails-ce-19.10
chainguardgitlab-rails-ce-19.20
chainguardgitlab-rails-ce-19.30
chainguardgitlab-rails-ce-19.40
chainguardgitlab-rails-ce-19.50
chainguardgitlab-rails-ce-fips-18.10
chainguardgitlab-rails-ce-fips-18.110
chainguardgitlab-rails-ce-fips-18.20
chainguardgitlab-rails-ce-fips-18.30
chainguardgitlab-rails-ce-fips-18.40
chainguardgitlab-rails-ce-fips-18.50
chainguardgitlab-rails-ce-fips-18.60
chainguardgitlab-rails-ce-fips-18.70
chainguardgitlab-rails-ce-fips-18.80
chainguardgitlab-rails-ce-fips-18.90
chainguardgitlab-rails-ce-fips-19.00
chainguardgitlab-rails-ce-fips-19.10
chainguardgitlab-rails-ce-fips-19.20
chainguardgitlab-rails-ce-fips-19.30
chainguardgitlab-rails-ce-fips-19.419.4.0-r1
debian 10node-handlebars3:4.1.0-1+deb10u1
debian 11node-handlebars3:4.5.3-1
debian 12node-handlebars3:4.5.3-1
debian 13node-handlebars3:4.5.3-1
debian 14node-handlebars3:4.5.3-1
echonode-handlebars3:4.5.3-1
Red Hatkibanano fix listed
seal npm::Seal Security Database@seal-security/handlebars4.1.2-sp999
seal npm::Seal Security Databasehandlebars4.1.2-sp999
wolficode-server0

References

All 15 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.