CVE-2021-35210

medium

Description

Contao 4.5.x through 4.9.x before 4.9.16, and 4.10.x through 4.11.x before 4.11.5, allows XSS. It is possible to inject code into the tl_log table that will be executed in the browser when the system log is called in the back end.

References

https://github.com/contao/contao/security/advisories/GHSA-h58v-c6rf-g9f7

https://contao.org/en/security-advisories/cross-site-scripting-in-the-system-log-2021.html

Details

Source: Mitre, NVD

Published: 2021-06-23

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 4.3

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

Severity: Medium

CVSS v3

Base Score: 6.1

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

Severity: Medium

EPSS

EPSS: 0.00526