CVE-2020-13270 Information

Description

Missing permission check on fork relation creation in GitLab CE/EE 11.3 and later through 13.0.1 allows guest users to create a fork relation on restricted public projects via API

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13270.json https://gitlab.com/gitlab-org/gitlab/-/issues/24648 https://hackerone.com/reports/419977

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8