CVE-2026-57501

Summary: CVE-2026-57501 affects Zen, a Firefox-based browser. Before version 1.21.5b, the contextual actions “Open link in glance” and “Split link in new tab” could load a page-controlled link URL with the System principal rather than the originating page’s principal, allowing a malicious page to...

CVE-2026-57501 Zen: Context-menu "Open link in glance" / "Split link in new tab" loads a page-controlled link with the System principal, bypassing the web-content scheme restriction

Zen is a firefox-based browser. Prior to 1.21.5b, Zen's glance and split-view context-menu actions, Open link in glance and Split link in new tab, load a page-controlled link URL with the System principal instead of the originating page's principal, allowing a malicious web page to place a link t...