Extend2 · Extend2 · CVE-2021-23568
**Name of the Vulnerable Software and Affected Versions**
extend2 versions prior to 1.0.1
**Description**
The issue concerns Prototype Pollution via the `extend` function due to an unsafe recursive merge. This allows for potential manipulation of the prototype, which can lead to various security issues.
**Recommendations**
For versions prior to 1.0.1, update to version 1.0.1 or later to resolve the issue. As a temporary workaround, consider restricting the use of the `extend` function until a patch is applied.