What is CVE-2021-39881?

CVE-2021-39881 is a vulnerability in GitLab CE/EE that allows a malicious user to create an OAuth client application with arbitrary scope names, potentially tricking unsuspecting users.

Which versions of GitLab CE/EE are affected by CVE-2021-39881?

All versions of GitLab CE/EE since version 7.7 up to version 14.3.1 are affected by CVE-2021-39881.

What is the severity of CVE-2021-39881?

CVE-2021-39881 has a severity rating of 3.5, which is considered low.

How can a malicious user exploit CVE-2021-39881?

A malicious user can exploit CVE-2021-39881 by creating an OAuth client application with spoofed scope names, tricking unsuspecting users into authorizing the application.

Is there a fix or patch available for CVE-2021-39881?

Yes, GitLab has provided a fix for CVE-2021-39881. It is recommended to update to the latest version of GitLab CE/EE to mitigate the vulnerability.

Vulnerability/
CVE-2021-39881

low

3.5

5/10/2021

4/8/2024

CVE-2021-39881

First published: Tue Oct 05 2021(Updated: )

In all versions of GitLab CE/EE since version 7.7, the application may let a malicious user create an OAuth client application with arbitrary scope names which may allow the malicious user to trick unsuspecting users to authorize the malicious client application using the spoofed scope name and description.

Credit: cve@gitlab.com

Affected Software	Affected Version	How to fix
GitLab GitLab	>=7.7.0<14.1.7
GitLab GitLab	>=7.7.0<14.1.7
GitLab GitLab	>=14.2.0<14.2.5
GitLab GitLab	>=14.2.0<14.2.5
GitLab GitLab	>=14.3.0<14.3.1
GitLab GitLab	>=14.3.0<14.3.1

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Frequently Asked Questions

What is CVE-2021-39881?
CVE-2021-39881 is a vulnerability in GitLab CE/EE that allows a malicious user to create an OAuth client application with arbitrary scope names, potentially tricking unsuspecting users.
Which versions of GitLab CE/EE are affected by CVE-2021-39881?
All versions of GitLab CE/EE since version 7.7 up to version 14.3.1 are affected by CVE-2021-39881.
What is the severity of CVE-2021-39881?
CVE-2021-39881 has a severity rating of 3.5, which is considered low.
How can a malicious user exploit CVE-2021-39881?
A malicious user can exploit CVE-2021-39881 by creating an OAuth client application with spoofed scope names, tricking unsuspecting users into authorizing the application.
Is there a fix or patch available for CVE-2021-39881?
Yes, GitLab has provided a fix for CVE-2021-39881. It is recommended to update to the latest version of GitLab CE/EE to mitigate the vulnerability.

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collector/mitre-cve
source/MITRE
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canonical/gitlab gitlab
version/gitlab gitlab/7.7.0
version/gitlab gitlab/14.2.0
version/gitlab gitlab/14.3.0

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