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CVE-2021-38503

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CVSS 3.1
10.0 critical
EPSS
4%p89
Published
()
Modified
Description

The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass restrictions such as executing scripts or navigating the top-level frame. This vulnerability affects Firefox < 94, Thunderbird < 91.3, and Firefox ESR < 91.3.

Vendors
mozilladebian
Products
firefox, firefox esr, thunderbird, debian linux
Weakness
CWE-863
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD CVE.org GitHub PoCs EPSS (3.8%)

In the news

No ingested article mentions this CVE yet.