What is CVE-2023-23604?

CVE-2023-23604 is a medium-severity vulnerability in Mozilla Firefox, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2023-06-02.

How severe is CVE-2023-23604?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Mozilla Firefox

CVE-2023-23604

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.

Vulnerability class: Broken Access Control

EPSS: 0.005 (37.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N.

Affected products

Mozilla Firefox — versions unspecified

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

security@mozilla.org (Permissions Required, Issue Tracking, Vendor Advisory)
security@mozilla.org (Vendor Advisory)

Frequently asked questions

What is CVE-2023-23604?: CVE-2023-23604 is a medium-severity vulnerability in Mozilla Firefox, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2023-06-02.
How severe is CVE-2023-23604?: Medium severity. CVSS v3 base score is 6.5 out of 10.