Prototype Pollution in extend
Versions of `extend` prior to 3.0.2 (for 3.x) and 2.0.2 (for 2.x) are vulnerable to Prototype Pollution. The `extend()` function allows attackers to modify the prototype of Object causing the addition or modification of an existing property that will exist on all objects. ## Recommendation If you're using `extend` 3.x upgrade to 3.0.2 or later. If you're using `extend` 2.x upgrade to 2.0.2 or later.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2018-16492US | critical9.8 | Exploit | ||
A prototype pollution vulnerability was found in module extend <2.0.2, ~<3.0.2 that allows an attacker to inject arbitrary properties onto Object.prototype. | ||||
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references
External citations — patches, advisories, analysis.
- https://github.com/github/advisory-database/pull/6695WEB
- https://github.com/justmoon/node-extendPACKAGE
- https://github.com/justmoon/node-extend/commit/0e68e71d93507fcc391e398bc84abd0666b28190WEB
- https://github.com/justmoon/node-extend/pull/48WEB
- https://hackerone.com/reports/381185WEB
- https://nvd.nist.gov/vuln/detail/CVE-2018-16492ADVISORY
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