CVE-2021-35955 Information

Description

Contao >=4.0.0 allows backend XSS via HTML attributes to an HTML field. Fixed in 4.4.56 4.9.18 4.11.7.

CVSS Vector

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

Reference

https://contao.org/en/news/contao-4-9-16-and-4-11-5-are-available.html https://github.com/contao/contao/security/advisories/GHSA-hr3h-x6gq-rqcp

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction Required

HIGH

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

4.8