Vulnerability CVE-2021-23974
Published: 2021-02-26

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.

Type:

NVD-CWE-noinfo

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:P/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
Partial
None
Affected software
Mozilla -> Firefox 

 References:
https://bugzilla.mozilla.org/buglist.cgi?bug_id=1528997%2C1683627
https://www.mozilla.org/security/advisories/mfsa2021-07/
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