CVE-2020-26973

high

Description

Certain input to the CSS Sanitizer confused it, resulting in incorrect components being removed. This could have been used as a sanitizer bypass. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6.

References

https://www.mozilla.org/security/advisories/mfsa2020-56/

https://www.mozilla.org/security/advisories/mfsa2020-55/

https://www.mozilla.org/security/advisories/mfsa2020-54/

https://bugzilla.mozilla.org/show_bug.cgi?id=1680084

Details

Source: Mitre, NVD

Published: 2021-01-07

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Severity: High