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CVE-2021-39889

Date: October 5, 2021

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.

Language: Ruby

Severity Score

Related Resources (6)

https://hackerone.com/reports/1294017
https://gitlab.com/gitlab-org/gitlab/-/issues/338062
https://nvd.nist.gov/vuln/detail/CVE-2021-39889
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39889.json
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-39889
https://www.mend.io/vulnerability-database/CVE-2021-39889

Severity Score

Weakness Type (CWE)

Authorization Bypass Through User-Controlled Key

CWE-639

Incorrect Permission Assignment for Critical Resource

CWE-732

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): SINGLE
Confidentiality (C): PARTIAL
Integrity (I): NONE
Availability (A): NONE
Additional information:

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