What’s Vulnerable › Vulnerabilities

CVE-2020-13335

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-10-07 · updated 2026-06-17
• Weakness: CWE-863

Description

Improper group membership validation when deleting a user account in GitLab >=7.12 allows a user to delete own account without deleting/transferring their group.

Affected products

• GitLab: from 7.12.0 before 13.2.10; from 13.3.0 before 13.3.7; from 13.4.0 before 13.4.2 — fixed in 13.2.10, 13.3.7, 13.4.2

How to fix

Upgrade to a fixed version: GitLab 13.2.10, 13.3.7, 13.4.2. Check the vendor advisory for mitigations.

References

• https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13335.json
• https://gitlab.com/gitlab-org/gitlab/-/issues/27231
• https://hackerone.com/reports/503823
• https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13335.json
• https://gitlab.com/gitlab-org/gitlab/-/issues/27231
• https://hackerone.com/reports/503823

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