CVE-2021-23507

Name: CVE-2021-23507
Creator: NVD / NIST
Published: 2022-02-04T20:15:08.467+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 2.09%

Last modified Jun 17, 2026

CVE-2021-23507 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 2.09% chance of exploitation in the next 30 days.

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

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

2.09%

79.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1321

Affected Software

Vendor	Product	Versions
Skratchdot	Object-Path-Set	< 1.0.2

References

https://github.com/skratchdot/object-path-set/blob/577f5299fed15bb9edd11c940ff3cf0b9f4748d5/index.js%23L8Broken Link
https://github.com/skratchdot/object-path-set/commit/2d67a714159c4099589b6661fa84e6d2adc31761Patch, Third Party Advisory
https://snyk.io/blog/remediate-javascript-type-confusion-bypassed-input-validation/Third Party Advisory
https://snyk.io/vuln/SNYK-JS-OBJECTPATHSET-2388576Exploit, Third Party Advisory
https://github.com/skratchdot/object-path-set/blob/577f5299fed15bb9edd11c940ff3cf0b9f4748d5/index.js%23L8Broken Link
https://github.com/skratchdot/object-path-set/commit/2d67a714159c4099589b6661fa84e6d2adc31761Patch, Third Party Advisory
https://snyk.io/blog/remediate-javascript-type-confusion-bypassed-input-validation/Third Party Advisory
https://snyk.io/vuln/SNYK-JS-OBJECTPATHSET-2388576Exploit, Third Party Advisory

Timeline

Published: Feb 4, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-23507?

How severe is CVE-2021-23507?

CVE-2021-23507 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 2.09% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23507?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-23507?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST