CVE-2021-39889

Description

In all versions of GitLab EE since version 14.1, due to an insecure direct object reference vulnerability, an endpoint may reveal the protected branch name to a malicious user who makes a crafted API call with the ID of the protected branch.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.24%
Vendor Advisory gitlab.com
Affected: GitLab GitLab
Published at:
Updated at:

References

Link Tags
https://gitlab.com/gitlab-org/gitlab/-/issues/338062 broken link
https://hackerone.com/reports/1294017 third party advisory permissions required
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39889.json vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-39889?
CVE-2021-39889 has been scored as a medium severity vulnerability.
How to fix CVE-2021-39889?
To fix CVE-2021-39889, 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-2021-39889 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-39889 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-39889?
CVE-2021-39889 affects GitLab GitLab.
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