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Critical 9.1Published Apr 7, 2026

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

Updated under an hour ago ()

Does this affect you?

It affects emmett-framework emmett and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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
9.1 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Weakness (CWE)
CWE-22
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
GitHub_M
NVD analysis
Analyzed
Record last updated
Apr 8, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
emmett-framework emmett
emmett_framework:emmett (from the name)
from 2.5.0, < 2.8.1
CNA record
emmett emmett
emmett:emmett
from 2.5.0 before 2.8.1
NVD

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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