CVE-2022-25352: The package libnested before 1.5.2 are vulnerable to Prototype Pollution via the set function in index.js

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HIGH 7.5REMOTEUPGRADE

CVE-2022-25352 is a high-severity flaw (CVSS 7.5) affecting libnested. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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)

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	2.1% (top 19%)
CISA exploited list	No
Weakness	CWE-1321
Published	2022-03-17
Last modified	2026-06-17

Publisher (CNA): Snyk · Vendor: libnested project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2022-03-17 12:15 UTCPublished CVE record published
2026-06-17 04:33 UTCUpdated Record last modified

libnested project libnested UPGRADE

Affected: < 1.5.2

Fixed in: 1.5.2

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls libnested

2. UPGRADE to 1.5.2

npm install libnested@">=1.5.2"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2022-25352?

libnested: upgrade to 1.5.2. Exact commands for each OS are on this page.

Is CVE-2022-25352 being exploited?

CVE-2022-25352 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2022-25352 affect?

CVE-2022-25352 affects libnested. Severity is high (CVSS 7.5). 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-1054

How urgent is CVE-2022-25352?

Priority 57/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2020-28283 CRITICAL 9.8 UPGRADE Prototype pollution vulnerability in 'libnested' versions 0.0.0 through 1.5.0 allows an attacker to cause a de

References

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