What’s Vulnerable › Vulnerabilities

CVE-2020-13272

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% 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-345

Description

OAuth flow missing verification checks CE/EE 12.3 and later through 13.0.1 allows unverified user to use OAuth authorization code flow

Affected products

• GitLab: from 12.3.0 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-2020-13272.json
• https://gitlab.com/gitlab-org/gitlab/-/issues/37038
• https://hackerone.com/reports/743556
• https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13272.json
• https://gitlab.com/gitlab-org/gitlab/-/issues/37038
• https://hackerone.com/reports/743556

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