What is CVE-2021-35210?

CVE-2021-35210 is a medium-severity vulnerability in Contao, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-06-23.

How severe is CVE-2021-35210?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Contao

CVE-2021-35210

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.007 (50.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Contao
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)
cve@mitre.org (x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2021-35210?: CVE-2021-35210 is a medium-severity vulnerability in Contao, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-06-23.
How severe is CVE-2021-35210?: Medium severity. CVSS v3 base score is 6.1 out of 10.