What is CVE-2020-11070?

CVE-2020-11070 is a medium-severity vulnerability in TYPO3 Svg Sanitizer, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-05-13.

How severe is CVE-2020-11070?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in TYPO3 Svg Sanitizer

CVE-2020-11070

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.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2020-05-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.005 (43.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000

Affected products

TYPO3 Svg Sanitizer
Typo3gmbh Svg Sanitizer — versions < 1.0.3

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/TYPO3GmbH/svg_sanitizer/security/advisories/GHSA-59cf-m7v5-wh5w (Third Party Advisory)

Frequently asked questions

What is CVE-2020-11070?: CVE-2020-11070 is a medium-severity vulnerability in TYPO3 Svg Sanitizer, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-05-13.
How severe is CVE-2020-11070?: Medium severity. CVSS v3 base score is 5.4 out of 10.