CVE-2023-3399

Insertion of Sensitive Information Into Sent Data in GitLab

An issue has been discovered in GitLab EE affecting all versions starting from 11.6 before 16.3.6, all versions starting from 16.4 before 16.4.2, all versions starting from 16.5 before 16.5.1. It was possible for an unauthorised project or group member to read the CI/CD variables using the custom project templates.

Affected

GitLab

CVSS v3.1 NVD

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

CVSS v3.1 GITLAB

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

EPSS

0.45% chance of exploitation in the next 30 days, 38th percentile

Published

2023-11-06

Updated

2025-11-20

Proof-of-concept exploits (1)

• https://hackerone.com/reports/2021616

References

• CVE Record
• NVD entry