CVE-2026-35571

MEDIUM

4.8

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.

CVE Details

CVSS v3.1 Score4.8

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredHIGH

User InteractionREQUIRED

Published4/7/2026

Last Modified4/8/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-79

References

https://github.com/NationalSecurityAgency/emissary/pull/1293(security-advisories@github.com)

https://github.com/NationalSecurityAgency/emissary/security/advisories/GHSA-cpm7-cfpx-3hvp(security-advisories@github.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.