In Firefox before 69.0, if a Content Security Policy (CSP) directive is defined that uses a hash-based source that takes the empty string as input, execution of any javascript: URIs will be allowed. This could allow for malicious JavaScript content to be run, bypassing CSP permissions.
In Firefox before 69.0, if a Content Security Policy (CSP) directive is defined that uses a hash-based source that takes the empty string as input, execution of any javascript: URIs will be allowed. This could allow for malicious JavaScript content to be run, bypassing CSP permissions.
https://www.mozilla.org/en-US/security/advisories/mfsa2019-25/#CVE-2019-11738 https://bugzilla.mozilla.org/show_bug.cgi?id=1452037
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