{"id":"CVE-2021-21297","aliases":["EUVD-2021-0581","GHSA-xp9c-82x8-7f67"],"status":"published","title":"Prototype Pollution in Node-Red","description":"Node-Red is a low-code programming for event-driven applications built using nodejs. 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. The vulnerability is patched in the 1.2.8 release. A workaround is to ensure only authorized users are able to access the editor url.","severity":{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01397,"percentile":0.72648,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-1321","CWE-915"],"published":"2021-02-26T16:20:17Z","modified":"2026-10-20T10:53:33Z","fixes":[{"ecosystem":"npm","package":"@node-red/runtime","fixed_in":["1.2.8"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"npm","package":"@node-red/runtime","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.8"}]}]},{"source":"osv","ecosystem":"npm","package":"@node-red/runtime","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.2.8"}]}]}],"products":[{"vendor":"node-red","product":"node-red"},{"vendor":"nodered","product":"node-red"}],"references":[{"url":"https://github.com/node-red/node-red/security/advisories/GHSA-xp9c-82x8-7f67","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://www.npmjs.com/package/%40node-red/runtime","tags":["x_refsource_MISC","x_transferred","web"]},{"url":"https://www.npmjs.com/package/%40node-red/editor-api","tags":["x_refsource_MISC","x_transferred","web"]},{"url":"https://github.com/node-red/node-red/releases/tag/1.2.8","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory","web"]},{"url":"https://www.npmjs.com/package/@node-red/editor-api","tags":["web"]},{"url":"https://www.npmjs.com/package/@node-red/runtime","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21297","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-xp9c-82x8-7f67"},{"url":"https://github.com/node-red/node-red","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-21297","title":"Prototype Pollution in Node-Red","description":"Node-Red is a low-code programming for event-driven applications built using nodejs. 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. The vulnerability is patched in the 1.2.8 release. A workaround is to ensure only authorized users are able to access the editor url.","status":"published","published":"2021-02-26T16:20:17Z","modified":"2024-08-03T18:09:15.688Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-1321","CWE-915"],"updated_at":"2026-11-02T14:33:00.137099Z"}],"euvd":[{"id":"EUVD-2021-0581","description":"Node-Red is a low-code programming for event-driven applications built using nodejs. 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. The vulnerability is patched in the 1.2.8 release. A workaround is to ensure only authorized users are able to access the editor url.","status":"published","published":"2021-02-26T16:20:17Z","modified":"2024-08-03T18:09:15Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-03T03:25:06.913643Z"}],"ghsa":[{"id":"GHSA-xp9c-82x8-7f67","title":"Prototype Pollution in Node-Red","description":"### Impact\n\nNode-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.\n\n### Patches\n\nThe vulnerability is patched in the 1.2.8 release.\n\n### Workarounds\n\nA workaround is to ensure only authorised users are able to access the editor url.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at [team@nodered.org](mailto:team@nodered.org)\n\n### Acknowledgements\n\nThanks to the Tencent Woodpecker Security Team for disclosing this vulnerability.","status":"published","published":"2021-02-26T16:31:05Z","modified":"2023-02-01T05:05:09Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-915","CWE-1321"],"updated_at":"2026-11-02T14:36:32.918681Z"}],"nvd":[{"id":"CVE-2021-21297","description":"Node-Red is a low-code programming for event-driven applications built using nodejs. 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. The vulnerability is patched in the 1.2.8 release. A workaround is to ensure only authorized users are able to access the editor url.","status":"published","published":"2021-02-26T17:15:12.21Z","modified":"2026-06-17T03:35:14.38Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","level":"high","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-915","CWE-1321"],"updated_at":"2026-11-02T14:06:50.399901Z"}],"osv":[{"id":"CVE-2021-21297","description":"Node-Red is a low-code programming for event-driven applications built using nodejs. 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. The vulnerability is patched in the 1.2.8 release. A workaround is to ensure only authorized users are able to access the editor url.","status":"published","published":"2021-02-26T17:15:12.21Z","modified":"2026-10-20T10:53:33.299966099Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:18.004149Z"},{"id":"GHSA-xp9c-82x8-7f67","title":"Prototype Pollution in Node-Red","description":"### Impact\n\nNode-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.\n\n### Patches\n\nThe vulnerability is patched in the 1.2.8 release.\n\n### Workarounds\n\nA workaround is to ensure only authorised users are able to access the editor url.\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Email us at [team@nodered.org](mailto:team@nodered.org)\n\n### Acknowledgements\n\nThanks to the Tencent Woodpecker Security Team for disclosing this vulnerability.","status":"published","published":"2021-02-26T16:31:05Z","modified":"2026-07-08T06:28:13.960703229Z","cvss":[{"version":"3.1","score":7.7,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","level":"high"}],"cwes":["CWE-1321","CWE-915"],"updated_at":"2026-11-02T15:47:00.198893Z"}]}}