CVE-2026-39847: Emmett

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Emmett is a full-stack Python web framework designed with simplicity. From 2.5.0 to before 2.8.1, the RSGI static handler for Emmett's internal assets (/__emmett__ paths) is vulnerable to path traversal attacks. An attacker can use ../ sequences (eg /__emmett__/../rsgi/handlers.py) to read arbitrary files outside the assets directory. This vulnerability is fixed in 2.8.1.

Affected products

• Emmett Emmett: from 2.5.0, before 2.8.1 (fixed in 2.8.1)

Published 2026-04-07. Last modified 2026-07-24.