CVE-2026-35583
Emissary has a Path Traversal via Blacklist Bypass in Configuration API
CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
12th
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.
| CWE | CWE-22 |
| Vendor | nationalsecurityagency |
| Product | emissary |
| Published | Apr 7, 2026 |
| Last Updated | Apr 9, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
NationalSecurityAgency / emissary
< 8.39.0