Detections
Analytics

SCA: security update for nbconvert (GHSA-4c99-qj7h-p3vg)

medium Tenable Self-Hosted Container Security Plugin ID 440690

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2026-39377)

Solution

Update the nbconvert library and its related packages to version 7.17.1 or later.

See Also

https://github.com/advisories/GHSA-4c99-qj7h-p3vg

Plugin Details

Severity: Medium

ID: 440690

Version: Revision 1.5

Type: Local

Family: SCA Checks

Published: 4/21/2026

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.8

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N

CVSS Score Source: CVE-2026-39377

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 4/21/2026

Vulnerability Publication Date: 4/21/2026

Reference Information

CVE: CVE-2026-39377