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Vulnerability record · CVE-2020-13300 · published 14 September 2020

CVE-2020-13300: Gitlab incorrect authorization vulnerability

Gitlab · Gitlab

GitLab CE/EE version 13.3 prior to 13.3.4 was vulnerable to an OAuth authorization scope change without user consent in the middle of the authorization flow.

10.0 CVSS 3.1 Critical EPSS 1.3% · top 30.9% CWE-863 · Incorrect authorization
10.0CVSS 3.1 base score, v2 6.4
1.3%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

GitLab CE/EE version 13.3 prior to 13.3.4 was vulnerable to an OAuth authorization scope change without user consent in the middle of the authorization flow.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13300.json Vendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/issues/219931 Broken Link
https://hackerone.com/reports/884766 Permissions RequiredThird Party Advisory
https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13300.json Vendor Advisory
https://gitlab.com/gitlab-org/gitlab/-/issues/219931 Broken Link
https://hackerone.com/reports/884766 Permissions RequiredThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-13300), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.