vulnerability
Arch Linux: Sandbox escape (CVE-2021-23999)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 7 | (AV:N/AC:M/Au:N/C:P/I:P/A:P) | Jun 24, 2021 | Jul 11, 2025 | Nov 27, 2025 |
Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
Jun 24, 2021
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
A security issue has been found in Firefox before version 88 and Thunderbird before version 78.10. 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.
Solution
arch-linux-upgrade-latest
References
- CVE-2021-23999
- https://attackerkb.com/topics/CVE-2021-23999
- URL-https://bugzilla.mozilla.org/show_bug.cgi?id=1691153
- URL-https://security.archlinux.org/ASA-202104-3
- URL-https://security.archlinux.org/ASA-202104-4
- URL-https://www.mozilla.org/security/advisories/mfsa2021-14/
- URL-https://www.mozilla.org/security/advisories/mfsa2021-15/
- URL-https://www.mozilla.org/security/advisories/mfsa2021-16/
- CWE-269
- CWE-697
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