VYPR
High severity8.8NVD Advisory· Published Jun 24, 2021· Updated Jun 17, 2026

CVE-2021-23999

CVE-2021-23999

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.

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Affected products

43

Patches

Vulnerability mechanics

References

4

News mentions

0

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