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Vulnerability record · CVE-2026-39847 · published 7 April 2026

CVE-2026-39847: Emmett path traversal vulnerability

Emmett · Emmett

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.

7.5 CVSS 3.1 High EPSS 0.58% · top 54.7% CWE-22 · Path traversal
7.5CVSS 3.1 base score
0.58%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
1References
24 Jul 2026Last modified by NVD

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.

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/emmett-framework/emmett/security/advisories/GHSA-pr46-2v3c-5356 Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2026-39847), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.