XSS in Contao

CVE-2018-5478

Contao 3.x before 3.5.32 allows XSS via the unsubscribe module in the frontend newsletter extension.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.004 (33.7th 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 (Third Party Advisory)
cve@mitre.org (Third Party Advisory)

Frequently asked questions

What is CVE-2018-5478?: CVE-2018-5478 is a medium-severity vulnerability in Contao, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2023-09-21.
How severe is CVE-2018-5478?: Medium severity. CVSS v3 base score is 6.1 out of 10.