What is the severity of CVE-2021-39906?

CVE-2021-39906 has a high severity rating due to its potential for executing arbitrary JavaScript code.

How do I fix CVE-2021-39906?

To fix CVE-2021-39906, update GitLab to the latest version that is above 14.4.1.

What versions of GitLab are affected by CVE-2021-39906?

GitLab versions from 13.5.0 up to 14.4.1 are affected by CVE-2021-39906.

What type of attacks can CVE-2021-39906 facilitate?

CVE-2021-39906 can facilitate attacks allowing execution of arbitrary JavaScript on behalf of the victim.

Is there a workaround for CVE-2021-39906 if I cannot update immediately?

There is no official workaround for CVE-2021-39906, so it is recommended to apply the update as soon as possible.

Vulnerability/
CVE-2021-39906

high

8.7

CWE

4/11/2021

4/8/2024

CVE-2021-39906: XSS

First published: Thu Nov 04 2021(Updated: )

Improper validation of ipynb files in GitLab CE/EE version 13.5 and above allows an attacker to execute arbitrary JavaScript code on the victim's behalf.

Credit: cve@gitlab.com

Affected Software	Affected Version	How to fix
GitLab	>=13.5.0<14.2.6
GitLab	>=13.5.0<14.2.6
GitLab	>=14.3.0<14.3.4
GitLab	>=14.3.0<14.3.4
GitLab	>=14.4.0<14.4.1
GitLab	>=14.4.0<14.4.1

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2021-39906?
CVE-2021-39906 has a high severity rating due to its potential for executing arbitrary JavaScript code.
How do I fix CVE-2021-39906?
To fix CVE-2021-39906, update GitLab to the latest version that is above 14.4.1.
What versions of GitLab are affected by CVE-2021-39906?
GitLab versions from 13.5.0 up to 14.4.1 are affected by CVE-2021-39906.
What type of attacks can CVE-2021-39906 facilitate?
CVE-2021-39906 can facilitate attacks allowing execution of arbitrary JavaScript on behalf of the victim.
Is there a workaround for CVE-2021-39906 if I cannot update immediately?
There is no official workaround for CVE-2021-39906, so it is recommended to apply the update as soon as possible.

agent/type
agent/references
agent/weakness
agent/author
agent/softwarecombine
agent/description
collector/mitre-cve
source/MITRE
agent/severity
agent/last-modified-date
agent/first-publish-date
agent/event
agent/source
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
vendor/gitlab
canonical/gitlab
version/gitlab/13.5.0
version/gitlab/14.3.0
version/gitlab/14.4.0

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Frequently Asked Questions

What is the severity of CVE-2021-39906?
CVE-2021-39906 has a high severity rating due to its potential for executing arbitrary JavaScript code.
How do I fix CVE-2021-39906?
To fix CVE-2021-39906, update GitLab to the latest version that is above 14.4.1.
What versions of GitLab are affected by CVE-2021-39906?
GitLab versions from 13.5.0 up to 14.4.1 are affected by CVE-2021-39906.
What type of attacks can CVE-2021-39906 facilitate?
CVE-2021-39906 can facilitate attacks allowing execution of arbitrary JavaScript on behalf of the victim.
Is there a workaround for CVE-2021-39906 if I cannot update immediately?
There is no official workaround for CVE-2021-39906, so it is recommended to apply the update as soon as possible.