CVE-2021-4191

Description

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.

5.3

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 93.39% Top 5%

Vendor Advisory gitlab.com

Affected: GitLab GitLab

References

Link	Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/343898	broken link
https://hackerone.com/reports/1089609	third party advisory permissions required
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4191.json	vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-4191?: CVE-2021-4191 has been scored as a medium severity vulnerability.
How to fix CVE-2021-4191?: To fix CVE-2021-4191, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-4191 being actively exploited in the wild?: It is possible that CVE-2021-4191 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~93% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-4191?: CVE-2021-4191 affects GitLab GitLab.

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