CVE-2021-39160

Name: CVE-2021-39160
Creator: NVD / NIST
Published: 2021-08-25T18:15:08.487+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.73%

Last modified Jun 17, 2026

CVE-2021-39160 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. nbgitpuller is a Jupyter server extension to sync a git repository one-way to a local path. Due to unsanitized input, visiting maliciously crafted links could result in arbitrary code execution in the user environment. EPSS estimates a 1.73% chance of exploitation in the next 30 days.

Description

nbgitpuller is a Jupyter server extension to sync a git repository one-way to a local path. Due to unsanitized input, visiting maliciously crafted links could result in arbitrary code execution in the user environment. This has been resolved in version 0.10.2 and all users are advised to upgrade. No work around exist for users who can not upgrade.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

1.73%

74.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Jupyterhub	Nbgitpuller	>= 0.9.0, < 0.10.2

References

https://github.com/jupyterhub/nbgitpuller/blob/main/CHANGELOG.md#0102---2021-08-25Release Notes, Third Party Advisory
https://github.com/jupyterhub/nbgitpuller/commit/07690644f29a566011dd0d7ba14cae3eb0490481Patch, Third Party Advisory
https://github.com/jupyterhub/nbgitpuller/security/advisories/GHSA-mq5p-2mcr-m52jThird Party Advisory
https://github.com/jupyterhub/nbgitpuller/blob/main/CHANGELOG.md#0102---2021-08-25Release Notes, Third Party Advisory
https://github.com/jupyterhub/nbgitpuller/commit/07690644f29a566011dd0d7ba14cae3eb0490481Patch, Third Party Advisory
https://github.com/jupyterhub/nbgitpuller/security/advisories/GHSA-mq5p-2mcr-m52jThird Party Advisory

Timeline

Published: Aug 25, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39160?

How severe is CVE-2021-39160?

CVE-2021-39160 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.73% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39160?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-39160?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST