CVE-2020-15654

MediumCVSS 6.5/10Last modified Jun 17, 2026

Description

When in an endless loop, a website specifying a custom cursor using CSS could make it look like the user is interacting with the user interface, when they are not. This could lead to a perceived broken state, especially when interactions with existing browser dialogs and warnings do not work. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.

Metrics

CVSS 3.1 6.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Weakness enumeration

CWE-835

Affected software

No affected versions have been published.

Timeline

Published: Aug 10, 2020
Last modified: Jun 17, 2026
NVD status: Modified

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