W3C Css Validator vulnerabilities

2 vulnerabilities

Known vulnerabilities in W3C Css Validator, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.

8.4CVE-2025-1781w3css_validator+1
EPSS score
0.39%
There is a XXE in W3CSS Validator versions before cssval-20250226 that allows an attacker to use specially-crafted XML objects to coerce server-side request forgery (SSRF).  This could be exploited to read arbitrary local files if an attacker has access to exception messages.5.4CVE-2020-4070w3ccss_validator+1
EPSS score
0.55%
In CSS Validator less than or equal to commit 54d68a1, there is a cross-site scripting vulnerability in handling URIs. A user would have to click on a specifically crafted validator link to trigger it. This has been patched in commit e5c09a9.