CVE-2021-23999
PoC —CVSS 3.1
8.8 high
EPSS
1%p68
Published
()
Modified
Description
If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System Principal and granted additional privileges that should not be granted to web content. This vulnerability affects Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
- Vendors
- mozilla
- Products
- firefox, firefox esr, thunderbird
- Weakness
- CWE-269, CWE-697
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
In the news0 stories
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