What’s Vulnerable › Vulnerabilities

CVE-2022-25354: Prototype Pollution

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.9% 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 set-in before 2.0.3 are vulnerable to Prototype Pollution via the setIn method, as it allows an attacker to merge object prototypes into it. **Note:** This vulnerability derives from an incomplete fix of [CVE-2020-28273](https://security.snyk.io/vuln/SNYK-JS-SETIN-1048049)

Affected products

• set-in: before 2.0.3 — fixed in 2.0.3

How to fix

Upgrade to a fixed version: set-in 2.0.3. Check the vendor advisory for mitigations.

References

• https://github.com/ahdinosaur/set-in/blob/dfc226d95cce8129de6708661e06e0c2c06f3490/index.js%23L5
• https://github.com/ahdinosaur/set-in/commit/6bad255961d379e4b1f5fbc52ef9dc8420816f24
• https://snyk.io/vuln/SNYK-JS-SETIN-2388571
• https://github.com/ahdinosaur/set-in/blob/dfc226d95cce8129de6708661e06e0c2c06f3490/index.js%23L5
• https://github.com/ahdinosaur/set-in/commit/6bad255961d379e4b1f5fbc52ef9dc8420816f24
• https://snyk.io/vuln/SNYK-JS-SETIN-2388571

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