Prototype Pollution in Node-Red
Impact
Node-RED 1.2.7 and earlier contains a Prototype Pollution vulnerability in the admin API. A badly formed request can modify the prototype of the default JavaScript Object with the potential to affect the default behaviour of the Node-RED runtime.
Patches
The vulnerability is patched in the 1.2.8 release.
Workarounds
A workaround is to ensure only authorised users are able to access the editor url.
For more information
If you have any questions or comments about this advisory:
- Email us at team@nodered.org
Acknowledgements
Thanks to the Tencent Woodpecker Security Team for disclosing this vulnerability.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @node-red/runtime | < 1.2.8 | 1.2.8 |
References
- https://github.com/node-red/node-red/security/advisories/GHSA-xp9c-82x8-7f67
- https://nvd.nist.gov/vuln/detail/CVE-2021-21297
- https://github.com/node-red/node-red
- https://github.com/node-red/node-red/releases/tag/1.2.8
- https://www.npmjs.com/package/@node-red/editor-api
- https://www.npmjs.com/package/@node-red/runtime
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N- Weakness (CWE)
CWE-1321, CWE-915- Platform
- npm
- Package
@node-red/runtime- Disclosed
- 26.02.2021
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-xp9c-82x8-7f67 - CC BY 4.0
Vulnerability history: @node-red/runtime
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
- 2
- First → latest
- 02.2021 02.2021
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Low 1
Disclosures per year
- 2021: 2
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
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