CVE-2026-39847

CRITICAL

Emmett has a path traversal in internal assets handler

Title source: cna

Description

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.

References (1)

[X_Refsource_Confirm] https://github.com/emmett-framework/emmett/security/advisories/GHSA-pr46-2v3c-5356

Scores

CVSS v3 9.1

EPSS 0.0006

EPSS Percentile 19.0%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact total

Details

CWE

CWE-22

Status published

Products (3)

emmett/emmett 2.5.0 - 2.8.1

emmett-framework/emmett >= 2.5.0, < 2.8.1

pypi/emmett 2.5.0 - 2.8.1PyPI

Published Apr 07, 2026

Tracked Since Apr 08, 2026