CVE-2023-23604

Creation of duplicate SystemPrincipal from less secure contexts

State: Published
Severity: 6.5 Medium
Published: Jun 2, 2023
Updated: Dec 18, 2025
Reserved: Jan 16, 2023

Description

A duplicate `SystemPrincipal` object could be created when parsing a non-system html document via `DOMParser::ParseFromSafeString`. This could have lead to bypassing web security checks. This vulnerability affects Firefox < 109.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N	CISA-ADP

Weaknesses

CWE-863 Incorrect Authorization

Affected Products

Product	Versions
FirefoxMozilla	before 109Affected

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1802346
https://www.mozilla.org/security/advisories/mfsa2023-01/

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