CVE-2020-13300 - CVE House

Status published High CVE-2020-13300

GitLab CE/EE version 13.3 prior to 13.3.4 was vulnerable to...

8 CVSS

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Thanks [fushbey](https://hackerone.com/fushbey) for reporting this vulnerability through our HackerOne bug bounty program

References

More from GitLab

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CVE-2025-9958

Insertion of Sensitive Information Into Sent Data in GitLab

High 7.7

CVE-2025-9957

Incorrect Authorization in GitLab

Low 2.7

CVE-2025-9825

Missing Authorization in GitLab

Medium 5

CVE-2025-9642

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab

High 8.7

CVE-2025-9484

Missing Authorization in GitLab

Medium 4.3

Affected Vendor

GitLab

View all reports →

Affected Software

GitLab

Vulnerable Versions:

>=13.3, <13.3.4

Timeline

Official Publish: September 14th, 2020

Last Modified: August 4th, 2024

Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.