CVE-2025-5271

medium

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.

References

https://www.mozilla.org/security/advisories/mfsa2025-45/

https://www.mozilla.org/security/advisories/mfsa2025-42/

https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-18105

https://bugzilla.mozilla.org/show_bug.cgi?id=1920348

Details

Source: Mitre, NVD

Published: 2025-05-27

Updated: 2026-09-30

Named Vulnerability: GHSA-jc7v-r8h6-xr5c

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.5

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N