CVE-2026-35583: Nsa Emissary

Medium severity, CVSS 5.3. EPSS: 0.4% chance of exploitation in the next 30 days.

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.

Affected products

• Nsa Emissary: up to and including 8.38.0

Published 2026-04-07. Last modified 2026-06-17.