What is the severity of CVE-2021-4191?

CVE-2021-4191 has a severity rating that indicates a medium risk due to potential user enumeration attacks.

How do I fix CVE-2021-4191?

To address CVE-2021-4191, users should upgrade their GitLab installations to a version later than 14.8.2.

What versions are affected by CVE-2021-4191?

CVE-2021-4191 affects GitLab CE/EE versions from 13.0 to 14.6.5, 14.7 to 14.7.4, and 14.8 to 14.8.2.

What is user enumeration in CVE-2021-4191?

User enumeration in CVE-2021-4191 refers to the ability of unauthenticated users to identify valid usernames through the GitLab GraphQL API.

Can CVE-2021-4191 impact private GitLab instances?

Yes, CVE-2021-4191 specifically impacts private GitLab instances that have restricted user sign-ups.

Vulnerability/
CVE-2021-4191

medium

5.3

28/3/2022

3/8/2024

CVE-2021-4191

First published: Mon Mar 28 2022(Updated: )

An issue has been discovered in GitLab CE/EE affecting versions 13.0 to 14.6.5, 14.7 to 14.7.4, and 14.8 to 14.8.2. Private GitLab instances with restricted sign-ups may be vulnerable to user enumeration to unauthenticated users through the GraphQL API.

Credit: cve@gitlab.com

Affected Software	Affected Version	How to fix
GitLab	>=13.0.0<14.6.5
GitLab	>=13.0.0<14.6.5
GitLab	>=14.7.0<14.7.4
GitLab	>=14.7.0<14.7.4
GitLab	>=14.8<14.8.2
GitLab	>=14.8<14.8.2

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Frequently Asked Questions

What is the severity of CVE-2021-4191?
CVE-2021-4191 has a severity rating that indicates a medium risk due to potential user enumeration attacks.
How do I fix CVE-2021-4191?
To address CVE-2021-4191, users should upgrade their GitLab installations to a version later than 14.8.2.
What versions are affected by CVE-2021-4191?
CVE-2021-4191 affects GitLab CE/EE versions from 13.0 to 14.6.5, 14.7 to 14.7.4, and 14.8 to 14.8.2.
What is user enumeration in CVE-2021-4191?
User enumeration in CVE-2021-4191 refers to the ability of unauthenticated users to identify valid usernames through the GitLab GraphQL API.
Can CVE-2021-4191 impact private GitLab instances?
Yes, CVE-2021-4191 specifically impacts private GitLab instances that have restricted user sign-ups.

agent/type
agent/references
agent/author
agent/softwarecombine
agent/description
collector/mitre-cve
source/MITRE
agent/last-modified-date
agent/severity
agent/event
agent/first-publish-date
agent/source
agent/tags
collector/nvd-index
agent/software-canonical-lookup-request
vendor/gitlab
canonical/gitlab
version/gitlab/13.0.0
version/gitlab/14.7.0
version/gitlab/14.8

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Frequently Asked Questions

What is the severity of CVE-2021-4191?
CVE-2021-4191 has a severity rating that indicates a medium risk due to potential user enumeration attacks.
How do I fix CVE-2021-4191?
To address CVE-2021-4191, users should upgrade their GitLab installations to a version later than 14.8.2.
What versions are affected by CVE-2021-4191?
CVE-2021-4191 affects GitLab CE/EE versions from 13.0 to 14.6.5, 14.7 to 14.7.4, and 14.8 to 14.8.2.
What is user enumeration in CVE-2021-4191?
User enumeration in CVE-2021-4191 refers to the ability of unauthenticated users to identify valid usernames through the GitLab GraphQL API.
Can CVE-2021-4191 impact private GitLab instances?
Yes, CVE-2021-4191 specifically impacts private GitLab instances that have restricted user sign-ups.