CVE-2026-35571
Medium
Description
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.
SeverityMedium
CVSS4.8
Exploit probability—
ProductNsa Emissary
PublishedApr 7, 2026
First seenApr 7, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- gov.nsa.emissary:emissary8.39.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nsa emissary | v ≤ 8.38.0 | — |
| gov.nsa.emissary:emissaryMaven | v < 8.39.0, v ≤ 8.38.0 | 8.39.0 |
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