CVE-2026-35583
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductNsa Emissary
PublishedApr 7, 2026
First seenApr 7, 2026
Weakness typeCWE-22Path traversal
How to fix
Update
- gov.nsa.emissary:emissary8.39.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| nsa emissary | v ≤ 8.38.0 | — |
| gov.nsa.emissary:emissaryMaven | v < 8.39.0 | 8.39.0 |
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