What’s Vulnerable › Vulnerabilities

CVE-2020-13263

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-06-19 · updated 2026-06-17
• Weakness: CWE-863

Description

An authorization issue relating to project maintainer impersonation was identified in GitLab EE 9.5 and later through 13.0.1 that could allow unauthorized users to impersonate as a maintainer to perform limited actions.

Affected products

• GitLab: from 9.5.0 before 12.9.8; from 12.10.0 before 12.10.7; 13.0.0 — fixed in 12.10.7, 12.9.8

How to fix

Upgrade to a fixed version: GitLab 12.10.7, 12.9.8. Check the vendor advisory for mitigations.

References

• https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13263.json
• https://gitlab.com/gitlab-org/gitlab/-/issues/211940
• https://hackerone.com/reports/819821
• https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13263.json
• https://gitlab.com/gitlab-org/gitlab/-/issues/211940
• https://hackerone.com/reports/819821

Get alerted when CVE-2020-13263 or the next vulnerability affects your stack