Arbitrary Code Execution in json-ptr
npm json-ptr before 2.1.0 has an arbitrary code execution vulnerability. The issue occurs in the set operation when the force flag is set to true. The function recursively set the property in the target object, however it does not properly check the key being set, leading to a prototype pollution.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | json-ptr | < 2.1.0 | 2.1.0 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-7766
- https://github.com/418sec/json-ptr/pull/3
- https://github.com/flitbit/json-ptr/commit/2539e3494c80af1eef24f0f433654a61f255f011
- https://github.com/flitbit/json-ptr/blob/master/src/util.ts%23L174
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1038396
- https://snyk.io/vuln/SNYK-JS-JSONPTR-1016939
- https://www.huntr.dev/bounties/2-npm-json-ptr
- https://www.npmjs.com/package/json-ptr
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L- Weakness (CWE)
CWE-1321, CWE-400, CWE-74- Platform
- npm
- Package
json-ptr- Disclosed
- 10.05.2021
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-x5r6-x823-9848 - 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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Arbitrary Code Execution in json-ptr this entry
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