CVE-2025-5271
firefox: Devtools' preview ignored CSP headers
Severity
LowRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · May 27, 2025
Updated · November 21, 2025
Description
A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Previewing a response in Devtools ignors CSP headers, which could allow content injection attacks.
Statement
Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.1 · 3.4CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N
CWE-807 · Reliance on Untrusted Inputs in a Security Decision