XSS in Drupal

CVE-2019-10909

In Symfony before 2.7.51, 2.8.x before 2.8.50, 3.x before 3.4.26, 4.x before 4.1.12, and 4.2.x before 4.2.7, validation messages are not escaped, which can lead to XSS when user input is included. This is related to symfony/framework-bundle.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.010 (60.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2019-10909?
CVE-2019-10909 is a medium-severity vulnerability in Drupal, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2019-05-16.
How severe is CVE-2019-10909?
Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2019-10909 known to be exploited?
5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.