CVE-2020-4070

Cross-site Scripting in CSS Validator

State: Published
Severity: 4.6 Medium
Published: Jun 22, 2020
Updated: Aug 4, 2024
Reserved: Dec 30, 2019

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.

Scores

CVSS	Score	Vector	Source
3.1	4.6 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N	GitHub_M

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected Products

Product	Versions
CSS ValidatorWorld Wide Web Consortium (W3C)	<= 54d68a1Affected

References

https://github.com/w3c/css-validator/security/advisories/GHSA-wf36-7w73-rh8c
https://github.com/w3c/css-validator/commit/e5c09a9119167d3064db786d5f00d730b584a53b

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