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Critical severity9.8NVD Advisory· Published Dec 20, 2019· Updated Jun 17, 2026

CVE-2019-19919

CVE-2019-19919

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.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
handlebarsnpm
>= 4.0.0, < 4.3.04.3.0
bootstrap-wysihtml5-railsRubyGems
>= 0.3.3.5, <= 0.3.3.8—
handlebarsnpm
< 3.0.83.0.8

Affected products

113

Patches

Vulnerability mechanics

References

12

News mentions

0

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