CVE-2020-26407 - CVE House
Back to Database
Status published Medium CVE-2020-26407

A XSS vulnerability exists in Gitlab CE/EE from 12.4 before...

Vulnerability Description

A XSS vulnerability exists in Gitlab CE/EE from 12.4 before 13.4.7, 13.5 before 13.5.5, and 13.6 before 13.6.2 that allows an attacker to perform cross-site scripting to other users via importing a malicious project

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

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

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2020-26407

Credits & Attribution

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

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

References

More from GitLab

View All →
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

Affected Software

Gitlab CE/EE
Vulnerable Versions:
>=12.4, <13.4.7, >=13.5, <13.5.5, >=13.6, <13.6.2

Timeline

Official Publish: December 10th, 2020
Last Modified: August 4th, 2024
Added to House: July 21st, 2026

CVSS Vectors

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

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.