Vulnerability in Mozilla Firefox
CVE-2020-15680
If a valid external protocol handler was referenced in an image tag, the resulting broken image size could be distinguished from a broken image size of a non-existent protocol handler. This allowed an attacker to successfully probe whether an external protocol handler was registered. This vulnerability affects Firefox < 82.
EPSS: 0.009 (57.6th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Mozilla Firefox — versions unspecified
References
- security@mozilla.org (x_refsource_MISC, Release Notes, Vendor Advisory)
- security@mozilla.org (Permissions Required, x_refsource_MISC, Issue Tracking, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-15680?
- CVE-2020-15680 is a medium-severity vulnerability in Mozilla Firefox. CVSS score: 5.3/10. Published 2020-10-22.
- How severe is CVE-2020-15680?
- Medium severity. CVSS v3 base score is 5.3 out of 10.