Service workers in Firefox before 61.0 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.
Service workers in Firefox before 61.0 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.
https://www.mozilla.org/en-US/security/advisories/mfsa2018-15/#CVE-2018-12358 https://bugzilla.mozilla.org/show_bug.cgi?id=1467852