CVE-2018-12358

Mozilla: Same-origin bypass using service worker and redirection

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Severity

Important

Red Hat Product Security

4.3

CVSS 3.0

Review impact separately from score.

Published · June 26, 2018

Updated · January 9, 2026

Description

Service workers can use redirection to avoid the tainting of cross-origin resources in some instances, allowing a malicious site to read responses which are supposed to be opaque. This vulnerability affects Firefox < 61.

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 · 4.3
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

CWE-829 · Inclusion of Functionality from Untrusted Control Sphere