CVE-2020-4070

medium

Description

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.

References

https://github.com/w3c/css-validator/security/advisories/GHSA-wf36-7w73-rh8c

https://github.com/w3c/css-validator/commit/e5c09a9119167d3064db786d5f00d730b584a53b

Details

Source: Mitre, NVD

Published: 2020-06-22

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 3.5

Vector: CVSS2#AV:N/AC:M/Au:S/C:N/I:P/A:N

Severity: Low

CVSS v3

Base Score: 5.4

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00343