CVE-2025-5271

—

CVSS 3.1

6.5 medium

EPSS

<1%p23

Published

May 27, 2025 (May 27, 2025)

Modified

Jun 17, 2026

Description

Previewing a response in Devtools ignored CSP headers, which could have allowed content injection attacks. This vulnerability was fixed in Firefox 139 and Thunderbird 139.

Vendors: mozilla
Products: firefox
Weakness: CWE-116
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.3%)

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