CVE-2026-35571

| EUVD-2026-19724 MEDIUM
2026-04-07 GitHub_M GHSA-cpm7-cfpx-3hvp
4.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

Lifecycle Timeline

4
Patch Released
Apr 08, 2026 - 02:30 nvd
Patch available
EUVD ID Assigned
Apr 07, 2026 - 16:00 euvd
EUVD-2026-19724
Analysis Generated
Apr 07, 2026 - 16:00 vuln.today
CVE Published
Apr 07, 2026 - 15:26 nvd
MEDIUM 4.8

Tags

XSS

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.

Analysis

Stored cross-site scripting in Emissary prior to 8.39.0 allows authenticated administrators to inject malicious javascript: URIs into navigation item configuration, which are then rendered unsafely in href attributes viewed by other authenticated users. The vulnerability requires high-privilege administrative access to modify navItems configuration but affects all other users accessing the web interface, with confirmed fix available in version 8.39.0.

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Priority Score

24
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +24
POC: 0

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CVE-2026-35571 vulnerability details – vuln.today
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