CVSS 3.1
9.9 criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:HCVE-2020-7741
Critical (9.9) in hello.js project hello.js. EPSS 1.5% chance of exploitation in the next 30 days. Fixed in hellojs 1.18.6.
This affects the package hellojs before 1.18.6. The code get the param oauth_redirect from url and pass it to location.assign without any check and sanitisation. So we can simply pass some XSS payloads into the url param oauth_redirect, such as javascript:alert(1).
Severity
- EPSS
- 1.5% chance of exploitation in the next 30 days; higher than 73% of CVEs (scores of 2026-10-31)
- CWE
- CWE-79
- Published
- Modified
- Record from
- the NVD, synced
Affected
- hello.js_project:hello.js
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-7jh9-6cpf-h4m7 | npm | hellojs | <1.18.6 | 1.18.6 |
References
- https://github.com/MrSwitch/hello.js/blob/3b79ec93781b3d7b9c0b56f598e060301d1f3e73/dist/hello.all.js%23L1545
- https://github.com/MrSwitch/hello.js/commit/d6f5137f30de6e0ef7048191ee6ae575fdc2f669
- https://snyk.io/vuln/SNYK-JS-HELLOJS-1014546
- https://github.com/MrSwitch/hello.js/blob/3b79ec93781b3d7b9c0b56f598e060301d1f3e73/dist/hello.all.js%23L1545
- https://github.com/MrSwitch/hello.js/commit/d6f5137f30de6e0ef7048191ee6ae575fdc2f669