CVE-2018-5164
Mozilla: CSP not applied to all multipart content sent with multipart/x-mixed-replace
Severity
ModerateRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · May 9, 2018
Updated · November 22, 2025
Description
Content Security Policy (CSP) is not applied correctly to all parts of multipart content sent with the "multipart/x-mixed-replace" MIME type. This could allow for script to run where CSP should block it, allowing for cross-site scripting (XSS) and other attacks. This vulnerability affects Firefox < 60.
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 3.0 · 6.1CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CWE-829 · Inclusion of Functionality from Untrusted Control Sphere