What’s Vulnerable › Vulnerabilities

CVE-2022-25352: Prototype Pollution

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-03-17 · updated 2026-06-17
• Weakness: CWE-1321

Description

The package libnested before 1.5.2 are vulnerable to Prototype Pollution via the set function in index.js. **Note:** This vulnerability derives from an incomplete fix for [CVE-2020-28283](https://security.snyk.io/vuln/SNYK-JS-LIBNESTED-1054930)

Affected products

• libnested: before 1.5.2 — fixed in 1.5.2

How to fix

Upgrade to a fixed version: libnested 1.5.2. Check the vendor advisory for mitigations.

References

• https://github.com/dominictarr/libnested/blob/master/index.js%23L22
• https://github.com/dominictarr/libnested/commit/c1129865d75fbe52b5a4f755ad3110ca5420f2e1
• https://snyk.io/vuln/SNYK-JS-LIBNESTED-2342117
• https://github.com/dominictarr/libnested/blob/master/index.js%23L22
• https://github.com/dominictarr/libnested/commit/c1129865d75fbe52b5a4f755ad3110ca5420f2e1
• https://snyk.io/vuln/SNYK-JS-LIBNESTED-2342117

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