CVE-2021-23974

medium

Description

The DOMParser API did not properly process '<noscript>' elements for escaping. This could be used as an mXSS vector to bypass an HTML Sanitizer. This vulnerability affects Firefox < 86.

References

https://www.mozilla.org/security/advisories/mfsa2021-07/

https://security.gentoo.org/glsa/202104-10

https://bugzilla.mozilla.org/buglist.cgi?bug_id=1528997%2C1683627

Details

Source: Mitre, NVD

Published: 2021-02-26

Updated: 2022-05-23

Risk Information

CVSS v2

Base Score: 4.3

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

Severity: Medium

CVSS v3

Base Score: 6.1

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