CVE-2020-25817

2021-06-0817:54:01

mitre

www.cve.org

silverstripe

4.6.0-rc1

xxe vulnerability

csscontentparser

xml external entity

xss

html.

AI Score

5.1

Confidence

High

EPSS

0.001

Percentile

41.5%

JSON

SilverStripe through 4.6.0-rc1 has an XXE Vulnerability in CSSContentParser. A developer utility meant for parsing HTML within unit tests can be vulnerable to XML External Entity (XXE) attacks. When this developer utility is misused for purposes involving external or user submitted data in custom project code, it can lead to vulnerabilities such as XSS on HTML output rendered through this custom code. This is now mitigated by disabling external entities during parsing. (The correct CVE ID year is 2020 [CVE-2020-25817, not CVE-2021-25817]).