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CSP violations generated links in the console tab of the developer tools, pointing to the violating resource. This caused a DNS prefetch which leaked that a CSP violation happened. This vulnerability affects Firefox < 128 and Thunderbird < 128.
Reserved 2024-07-09 | Published 2024-07-09 | Updated 2024-09-12 | Assigner mozillaCSP violation leakage when using devtools
Aidan Stephenson & Yannik Marchand
bugzilla.mozilla.org/show_bug.cgi?id=1880374
www.mozilla.org/security/advisories/mfsa2024-29/
www.mozilla.org/security/advisories/mfsa2024-32/
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