Because Firefox did not implement the <code>unsafe-hashes</code> CSP directive, an...

Vulnerability Description

Because Firefox did not implement the <code>unsafe-hashes</code> CSP directive, an attacker who was able to inject markup into a page otherwise protected by a Content Security Policy may have been able to inject executable script. This would be severely constrained by the specified Content Security Policy of the document. This vulnerability affects Firefox < 108.

References

• https://www.mozilla.org/security/advisories/mfsa2022-51/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1644790
• https://security.gentoo.org/glsa/202305-06