Description
In all versions of GitLab CE/EE, there exists a content spoofing vulnerability which may be leveraged by attackers to trick users into visiting a malicious website by spoofing the content in an error response.
References (3)
Core 3
Core References
Broken Link x_refsource_misc
https://gitlab.com/gitlab-org/gitlab/-/issues/27241
Permissions Required, Third Party Advisory x_refsource_misc
https://hackerone.com/reports/504961
Vendor Advisory x_refsource_confirm
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39873.json
Scores
CVSS v3
4.3
EPSS
0.0027
EPSS Percentile
51.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Details
Status
published
Products (2)
gitlab/gitlab
4.3.0 (2 CPE variants)
gitlab/gitlab
1.0.0 - 14.1.7 (2 CPE variants)
Published
Oct 04, 2021
Tracked Since
Feb 18, 2026