defineid/Trespasser

PoC

CVE-2026-74970, Fission site isolation bypass in Firefox WebRender

view exploit source poc_in_githubauthor defineidpublished 2026-08-25catalog poc_in_github

exploited CVEs (1)

Known CVEs related to this entry.

ID	severity	EPSS	exploitable	published
CVE-2026-74970US	—	0.16% (5th)	Exploit	2026-08-18
Site isolation issue in the Graphics component. This vulnerability was fixed in Firefox 154, Firefox ESR 153.1, Thunderbird 154, and Thunderbird 153.1.

scry

Working exploits like this target internet-facing systems. See what is exposed on your perimeter with a free passive scan.