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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.

🗓️ 03 Sep 2025 22:46:00Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 14 Views

CSP violations leaked via Domain Name System prefetch in console links; affects Firefox and Thunderbird before 128.

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03 Sep 2025 22:46Current
6.5Medium risk
Vulners AI Score6.5
CVSS 3.15.3
EPSS0.00496
SSVC
14