CVE-2021-23507

Prototype Pollution

7.5 HighFix available

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

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

2.12%Up 1.2 points since Feb 8, 2022

What each source reports

CVE List Score used 7.5

Prototype Pollution

Record: CVE-2021-23507
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P
Updated: 2026-11-02

EUVDEUVD-2022-1036 7.5

Record: EUVD-2022-1036
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P
Updated: 2026-11-03

GitHub AdvisoriesGHSA-h6pr-c536-6rjg 7.5

Prototype Pollution in object-path-set

Record: GHSA-h6pr-c536-6rjg
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-1321
Updated: 2026-11-02

NVD 7.5

Record: CVE-2021-23507
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 7.5 HighAV:N/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-1321
Updated: 2026-11-02

OSV 9.8

Record: CVE-2021-23507
CVSS 3.1: 9.8 CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVGHSA-h6pr-c536-6rjg 7.5

Prototype Pollution in object-path-set

Record: GHSA-h6pr-c536-6rjg
CVSS 3.1: 7.5 HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness: CWE-1321
Updated: 2026-11-02

Affected products

skratchdot object-path-set

Affected packages

Affected packages
Package	Affected	Fixed
`object-path-set` npm	before 1.0.2	1.0.2

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2021-23507 is a high vulnerability (CVSS 7.5) in Skratchdot Object-path-set, published February 4, 2022. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.12%, the 82nd percentile. Fixed in object-path-set 1.0.2.