Vulnerability in Mozilla Firefox

CVE-2019-9817

Images from a different domain can be read using a canvas object in some circumstances. This could be used to steal image data from a different site in violation of same-origin policy. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.

EPSS: 0.008 (53.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2019-9817?
CVE-2019-9817 is a medium-severity vulnerability in Mozilla Firefox, classified under Origin Validation Error. CVSS score: 5.3/10. Published 2019-07-23.
How severe is CVE-2019-9817?
Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2019-9817 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.