CVE-2026-35583

Emissary is a P2P based data-driven workflow engine. Prior to 8.39.0, the configuration API endpoint (/api/configuration/{name}) validated configuration names using a blacklist approach that checked for \, /, .., and trailing .. This could potentially be bypassed using URL-encoded variants, double-encoding, or Unicode normalization to achieve path traversal and read configuration files outside the intended directory. This vulnerability is fixed in 8.39.0.

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/NationalSecurityAgency/emissary/security/advisories/GHSA-hxf2-gm22-7vcm	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:nsa:emissary:*:*:*:*:*:*:*:*

History

26 Oct 2026, 21:10

Type	Values Removed	Values Added
Summary		(es) Emissary es un motor de flujo de trabajo basado en P2P y dirigido por datos. Antes de 8.39.0, el endpoint de la API de configuración (/api/configuration/{name}) validaba los nombres de configuración utilizando un enfoque de lista negra que comprobaba la presencia de \, /, .., y .. finales. Esto podría eludirse potencialmente utilizando variantes codificadas en URL, doble codificación o normalización Unicode para lograr un salto de ruta y leer archivos de configuración fuera del directorio previsto. Esta vulnerabilidad está corregida en 8.39.0.

Information

Published : 2026-04-07 17:16

Updated : 2026-10-26 21:10

NVD link : CVE-2026-35583

Mitre link : CVE-2026-35583

CVE.ORG link : CVE-2026-35583

JSON object : View

Products Affected

nsa

emissary

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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