Vulnerability CVE-2021-39889
Published: 2021-10-05

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.

Type:

CWE-732

CVSS2 => (AV:N/AC:L/Au:S/C:P/I:N/A:N)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4/10
2.9/10
8/10
Exploit range
Attack complexity
Authentication
Remote
Low
Single time
Confidentiality impact
Integrity impact
Availability impact
Partial
None
None
Affected software
Gitlab -> Gitlab 

 References:
https://hackerone.com/reports/1294017
https://gitlab.com/gitlab-org/gitlab/-/issues/338062
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39889.json
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