DEBIAN-CVE-2026-39377

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Source

https://security-tracker.debian.org/tracker/CVE-2026-39377

Import Source

https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-39377.json

JSON Data

https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-39377

Upstream

CVE-2026-39377

Published

2026-04-21T01:16:05.937Z

Modified

2026-04-29T17:01:14.050682Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N CVSS Calculator

Summary

[none]

Details

The nbconvert tool, jupyter nbconvert, converts Jupyter notebooks to various other formats via Jinja templates. Versions 6.5 through 7.17.0 allow arbitrary file writes to locations outside the intended output directory when processing notebooks containing crafted cell attachment filenames. The ExtractAttachmentsPreprocessor passes attachment filenames directly to the filesystem without sanitization, enabling path traversal attacks. This vulnerability provides complete control over both the destination path and file extension. Version 7.17.1 contains a patch.

References

https://security-tracker.debian.org/tracker/CVE-2026-39377

Affected packages

Debian:13 / nbconvert

Package

Name: nbconvert
Purl: pkg:deb/debian/nbconvert?arch=source

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Affected versions

7.*

7.16.6-1

7.17.0-1

7.17.1-1

Ecosystem specific

{
    "urgency": "not yet assigned"
}

Database specific

source

"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-39377.json"

Debian:14 / nbconvert