Prototype Pollution in json-ptr
This affects the package json-ptr before 3.0.0. A type confusion vulnerability can lead to a bypass of CVE-2020-7766 when the user-provided keys used in the pointer parameter are arrays.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | json-ptr | < 3.0.0 | 3.0.0 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-23509
- https://github.com/flitbit/json-ptr/pull/42
- https://github.com/flitbit/json-ptr/commit/5dc458fbad1c382a2e3ca6d62e66ede3d92849ca
- https://github.com/flitbit/json-ptr
- https://github.com/flitbit/json-ptr%23security-vulnerabilities-resolved
- https://snyk.io/vuln/SNYK-JS-JSONPTR-1577291
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L- Weakness (CWE)
CWE-1321, CWE-843- Platform
- npm
- Package
json-ptr- Disclosed
- 08.11.2021
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-8gwj-8hxc-285w - CC BY 4.0
Vulnerability history: json-ptr
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 3
- First → latest
- 05.2021 11.2021
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 2
- Medium 1
Disclosures per year
- 2021: 3
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
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Prototype Pollution in json-ptr this entry
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