Fluid Attacks Database

Description

Prototype Pollution in handlebars Versions of handlebars prior to 4.0.14 are vulnerable to Prototype Pollution. Templates may alter an Objects' prototype, thus allowing an attacker to execute arbitrary code on the server.

Recommendation

For handlebars 4.1.x upgrade to 4.1.2 or later. For handlebars 4.0.x upgrade to 4.0.14 or later.

Mitigation

Update Impact

Minimal update. May introduce new vulnerabilities or breaking changes.

Ecosystem	Package	Affected version	Patched versions
npm	handlebars	>=3.0.0 <3.0.7 \|\| >=4.0.0 <4.0.14 \|\| >=4.1.0 <4.1.2	4.1.2, 4.0.14, 3.0.7

Aliases

1. GCVE-GHSA-q42p-pg8m-cqh6

References

1. https://github.com/handlebars-lang/handlebars.js/issues/14952. https://github.com/handlebars-lang/handlebars.js/commit/0d6d8c335ad81bad1b672fc56b6a44f6aa472dac3. https://github.com/handlebars-lang/handlebars.js/commit/7372d4e9dffc9d70c09671aa28b9392a1577fd864. https://github.com/handlebars-lang/handlebars.js/commit/85c8783b34fc6d36145d8b53885ad0b9e3c3f9c45. https://github.com/handlebars-lang/handlebars.js/commit/cd38583216dce3252831916323202749431c773e6. https://www.npmjs.com/advisories/755