CVE-2026-39847 CRITICAL

CVE-2026-39847: Emmett has a path traversal in internal assets handler

Vendor Emmett-Framework
Product emmett
Weakness CWE-22 · Path traversal
Published April 7, 2026
Last update April 8, 2026
View on NVD All CVEs

CVSS base score

9.1/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 7, 2026 CVE published
April 8, 2026 Record updated