GHSA-g9r4-xpmj-mj65

Prototype Pollution in handlebars

At a glance

Published: 2020-09-04 15:06 UTC
Updated: 2026-09-10 03:49 UTC

Description

Versions of `handlebars` prior to 3.0.8 or 4.5.3 are vulnerable to prototype pollution. It is possible to add or modify properties to the Object prototype through a malicious template. This may allow attackers to crash the application or execute Arbitrary Code in specific conditions. ## Recommendation Upgrade to version 3.0.8, 4.5.3 or later.

Affected packages

Package	Versions
npm · handlebars	introduced 0, fixed 3.0.8
npm · handlebars	introduced 4.0.0, fixed 4.5.3

References

https://www.npmjs.com/advisories/1325 WEB

Sources

Source	Licence
OSV.dev	CC-BY 4.0 — GitHub Advisory Database