Vulnerability Details : CVE-2021-4191
Public exploit exists!
An issue has been discovered in GitLab CE/EE affecting versions 13.0 to 14.6.5, 14.7 to 14.7.4, and 14.8 to 14.8.2. Private GitLab instances with restricted sign-ups may be vulnerable to user enumeration to unauthenticated users through the GraphQL API.
Exploit prediction scoring system (EPSS) score for CVE-2021-4191
Probability of exploitation activity in the next 30 days: 78.18%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 98 % EPSS Score History EPSS FAQ
Metasploit modules for CVE-2021-4191
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GitLab GraphQL API User Enumeration
Disclosure Date: 2022-02-25First seen: 2022-12-23auxiliary/scanner/http/gitlab_graphql_user_enumThis module queries the GitLab GraphQL API without authentication to acquire the list of GitLab users (CVE-2021-4191). The module works on all GitLab versions from 13.0 up to 14.8.2, 14.7.4, and 14.6.5. Authors: - jbaines-r7 - mungsul
CVSS scores for CVE-2021-4191
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:P/I:N/A:N |
10.0
|
2.9
|
NIST |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
3.9
|
1.4
|
GitLab Inc. |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
3.9
|
1.4
|
NIST |
References for CVE-2021-4191
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https://hackerone.com/reports/1089609
Sign inPermissions Required;Third Party Advisory
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https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-4191.json
2021/CVE-2021-4191.json · master · GitLab.org / cves · GitLabVendor Advisory
Products affected by CVE-2021-4191
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:enterprise:*:*:*
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*
- cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:*