Cross-Site Scripting in SVG Sanitizer

MEDIUM 5.4CVE-2020-11070 · GHSA-59cf-m7v5-wh5w · Published 13/05/2020 · updated 17/06/2026

In short

CVE-2020-11070 is a MEDIUM (CVSS 5.4) vulnerability affecting t3g/svg-sanitizer, svg sanitizer (typo3).
Chance of exploitation in the next 30 days (EPSS): 0.54%, higher than 45.4% of all vulnerabilities.
Fix: update to 1.0.3 or later.

Package	Affected versions	Patched versions
t3g/svg-sanitizer Packagist	`< 1.0.3`	`1.0.3`
svg sanitizer typo3	`< 1.0.3`	`1.0.3`

Description

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.

An updated version 1.0.3 is available from the TYPo3 extension manager and at https://extensions.typo3.org/extension/download/svg_sanitizer/1.0.3/zip/ Users of the extension are advised to update the extension as soon as possible.

NVD 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.

References

TYPO3GmbH/svg_sanitizer security advisory · WEB
nvd.nist.gov/vuln/detail/CVE-2020-11070 · ADVISORY

Running one of these products? Scan your site to see whether it exposes a vulnerable version.

Scan my site free