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MFSA2021-07 Firefox: Security Vulnerabilities fixed in Firefox 86 (CVE-2021-23974)

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MFSA2021-07 Firefox: Security Vulnerabilities fixed in Firefox 86 (CVE-2021-23974)

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:N)
Published
02/23/2021
Created
02/25/2021
Added
02/24/2021
Modified
03/05/2021

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.

Solution(s)

  • mozilla-firefox-upgrade-86_0

References

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