CVE-2026-35571 — Emissary has Stored XSS via Navigation Template Link Injection
Emissary is a P2P based data-driven workflow engine. Prior to 8.39.0, Mustache navigation templates interpolated configuration-controlled link values directly into href attribut…
Published: 2026-04-07 · CVSS: 4.8 · CVSS 3.1
Emissary is a P2P based data-driven workflow engine. Prior to 8.39.0, Mustache navigation templates interpolated configuration-controlled link values directly into href attributes without URL scheme validation. An administrator who could modify the navItems configuration could inject javascript: URIs, enabling stored cross-site scripting (XSS) against other authenticated users viewing the Emissary web interface. This vulnerability is fixed in 8.39.0.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7