CVE-2020-15682

When a link to an external protocol was clicked, a prompt was presented that allowed the user to choose what application to open it in

published October 22, 2020

CVSS
—
EPSS
0%
Percentile
40.5
In the wild
Unconfirmed
What it is

When a link to an external protocol was clicked, a prompt was presented that allowed the user to choose what application to open it in. An attacker could induce that prompt to be associated with an origin they didn't control, resulting in a spoofing attack. This was fixed by changing external protocol prompts to be tab-modal while also ensuring they could not be incorrectly associated with a different origin. This vulnerability affects Firefox < 82.

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.00480 · 40.5th percentile
Published
2020-10-22T20:32Z
EPSS history
Timeline
  • 22 OCT 20:32Z
    When a link to an external protocol was clicked, a prompt was presented that allowed the user to choose what application to open it in
    cvelistv5