DEBIAN-CVE-2026-39378

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Source
https://security-tracker.debian.org/tracker/CVE-2026-39378
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-39378.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2026-39378
Upstream
Published
2026-04-21T01:16:06.073Z
Modified
2026-04-29T17:00:52.247890Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N CVSS Calculator
Summary
[none]
Details

The nbconvert tool, jupyter nbconvert, converts Jupyter notebooks to various other formats via Jinja templates. In versions 6.5 through 7.17.0, when HTMLExporter.embed_images=True, nbconvert's markdown renderer allows arbitrary file read via path traversal in image references. A malicious notebook can exfiltrate sensitive files from the conversion host by embedding them as base64 data URIs in the output HTML. nbconvert 7.17.1 contains a fix. As a workaround, do not enable HTMLExporter.embed_images; it is not enabled by default.

References

Affected packages

Debian:11 / 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

5.*
5.6.1-3
5.6.1-3+deb11u1
6.*
6.1.0-1
6.3.0-1
6.4.0-1
6.4.4-1
6.4.4-2
6.5.1-1
6.5.3-1
6.5.3-1.1
6.5.3-2
6.5.3-3
6.5.3-4
6.5.3-5
7.*
7.16.4-1
7.16.4-2
7.16.5-1
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-2026-39378.json"

Debian:12 / 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

6.*
6.5.3-3
6.5.3-4
6.5.3-5
7.*
7.16.4-1
7.16.4-2
7.16.5-1
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-2026-39378.json"

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-2026-39378.json"

Debian:14 / 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
Fixed
7.17.1-1

Affected versions

7.*
7.16.6-1
7.17.0-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-39378.json"