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CVE-2025-5266

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CVSS 3.1
4.3 medium
EPSS
<1%p25
Published
()
Modified
Description

Script elements loading cross-origin resources generated load and error events which leaked information enabling XS-Leaks attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.

Vendors
mozilla
Products
firefox
Weakness
CWE-200
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
NVD CVE.org GitHub PoCs EPSS (0.3%)

In the news

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