What is CVE-2019-9807?

CVE-2019-9807 is a medium-severity vulnerability in Mozilla Firefox, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2019-04-26.

How severe is CVE-2019-9807?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Improper input validation in Mozilla Firefox

CVE-2019-9807

When arbitrary text is sent over an FTP connection and a page reload is initiated, it is possible to create a modal alert message with this text as the content. This could potentially be used for social engineering attacks. This vulnerability affects Firefox < 66.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.008 (52.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N.

Affected products

Mozilla Firefox — versions unspecified

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

security@mozilla.org (x_refsource_MISC, Vendor Advisory)
security@mozilla.org (Exploit, x_refsource_MISC, Issue Tracking, Vendor Advisory)

Frequently asked questions

What is CVE-2019-9807?: CVE-2019-9807 is a medium-severity vulnerability in Mozilla Firefox, classified under Improper Input Validation. CVSS score: 4.3/10. Published 2019-04-26.
How severe is CVE-2019-9807?: Medium severity. CVSS v3 base score is 4.3 out of 10.