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.
History

Thu, 16 Apr 2026 19:00:00 +0000

Type Values Removed Values Added
First Time appeared Nsa
Nsa emissary
CPEs cpe:2.3:a:nsa:emissary:*:*:*:*:*:*:*:*
Vendors & Products Nsa
Nsa emissary

Thu, 09 Apr 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 08 Apr 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Nationalsecurityagency
Nationalsecurityagency emissary
Vendors & Products Nationalsecurityagency
Nationalsecurityagency emissary

Tue, 07 Apr 2026 18:00:00 +0000

Type Values Removed Values Added
Description 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.
Title Emissary has a Path Traversal via Blacklist Bypass in Configuration API
Weaknesses CWE-22
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-04-07T15:57:41.496Z

Updated: 2026-04-09T16:18:56.328Z

Reserved: 2026-04-03T20:09:02.827Z

Link: CVE-2026-35583

cve-icon Vulnrichment

Updated: 2026-04-09T16:12:30.294Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-07T17:16:33.663

Modified: 2026-04-16T18:57:47.437

Link: CVE-2026-35583

cve-icon Redhat

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