When a parent page loaded a child in an iframe with `unsafe-inline`, the parent Content Security Policy could have overridden the child Content Security Policy. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.
https://lists.debian.org/debian-lts-announce/2024/01/msg00022.html
https://lists.debian.org/debian-lts-announce/2024/01/msg00015.html
https://www.mozilla.org/security/advisories/mfsa2024-04/
https://www.mozilla.org/security/advisories/mfsa2024-02/
https://www.mozilla.org/security/advisories/mfsa2024-01/
https://bugzilla.mozilla.org/show_bug.cgi?id=1764343
Source: Mitre, NVD
Published: 2024-01-23
Updated: 2024-02-02
Base Score: 7.8
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N
Severity: High
Base Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
Severity: Medium
EPSS: 0.00642