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

Published: Jul 9, 2026Updated: Jul 10, 2026 Sources: CVE List NVDCWE-266

N/ACVSS

NVD MITRE

Description

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 to a file URL that can load with System privileges when opened through either context-menu item and bypass the content-to-file security check that blocks an ordinary click. This issue is fixed in version 1.21.5b.

No summary for this CVE yet.

Weaknesses

CWE-266

Affected Products

zen-browser

oss-projectaka desktop

desktopMixed

Consumer Software / browser

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

https://github.com/zen-browser/desktop/commit/44f7616238208200547c7df500d945752d7b6379

github.com

https://github.com/zen-browser/desktop/releases/tag/1.21.5b

github.com

https://github.com/zen-browser/desktop/security/advisories/GHSA-vpvg-hp3v-rm5q

github.com

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