CVE-2026-35571
MEDIUMEmissary has Stored XSS via Navigation Template Link Injection
Title source: cnaDescription
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.
References (2)
Core 2
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/NationalSecurityAgency/emissary/security/advisories/GHSA-cpm7-cfpx-3hvp
X_Refsource_Misc x_refsource_misc
https://github.com/NationalSecurityAgency/emissary/pull/1293
Scores
CVSS v3
4.8
EPSS
0.0018
EPSS Percentile
7.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (3)
gov.nsa.emissary/emissary
0 - 8.39.0Maven
NationalSecurityAgency/emissary
< 8.39.0
nsa/emissary
< 8.38.0
Published
Apr 07, 2026
Tracked Since
Apr 07, 2026