What is CVE-2019-17014?

CVE-2019-17014 is a high-severity vulnerability in Mozilla Firefox, classified under Incorrect Authorization. CVSS score: 7.4/10. Published 2020-01-08.

How severe is CVE-2019-17014?

High severity. CVSS v3 base score is 7.4 out of 10.

Auth bypass in Mozilla Firefox

CVE-2019-17014

If an image had not loaded correctly (such as when it is not actually an image), it could be dragged and dropped cross-domain, resulting in a cross-origin information leak. This vulnerability affects Firefox < 71.

Vulnerability class: Broken Access Control

Published 2020-01-08 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.011 (64.3th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

Mozilla Firefox — versions before 71

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

bugzilla.mozilla.org/show_bug.cgi (Permissions Required)
www.mozilla.org/security/advisories/mfsa2019-36/ (Vendor Advisory)

Frequently asked questions

What is CVE-2019-17014?: CVE-2019-17014 is a high-severity vulnerability in Mozilla Firefox, classified under Incorrect Authorization. CVSS score: 7.4/10. Published 2020-01-08.
How severe is CVE-2019-17014?: High severity. CVSS v3 base score is 7.4 out of 10.