What’s Vulnerable › Vulnerabilities

CVE-2021-23507: 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: 2022-02-04 · updated 2026-06-17
• Weakness: CWE-1321

Description

The package object-path-set before 1.0.2 are vulnerable to Prototype Pollution via the setPath method, as it allows an attacker to merge object prototypes into it. *Note:* This vulnerability derives from an incomplete fix in https://security.snyk.io/vuln/SNYK-JS-OBJECTPATHSET-607908

Affected products

• object-path-set: before 1.0.2 — fixed in 1.0.2

How to fix

Upgrade to a fixed version: object-path-set 1.0.2. Check the vendor advisory for mitigations.

References

• https://github.com/skratchdot/object-path-set/blob/577f5299fed15bb9edd11c940ff3cf0b9f4748d5/index.js%23L8
• https://github.com/skratchdot/object-path-set/commit/2d67a714159c4099589b6661fa84e6d2adc31761
• https://snyk.io/blog/remediate-javascript-type-confusion-bypassed-input-validation/
• https://snyk.io/vuln/SNYK-JS-OBJECTPATHSET-2388576
• https://github.com/skratchdot/object-path-set/blob/577f5299fed15bb9edd11c940ff3cf0b9f4748d5/index.js%23L8
• https://github.com/skratchdot/object-path-set/commit/2d67a714159c4099589b6661fa84e6d2adc31761
• https://snyk.io/blog/remediate-javascript-type-confusion-bypassed-input-validation/
• https://snyk.io/vuln/SNYK-JS-OBJECTPATHSET-2388576

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