CVE-2023-4378 - CVE House
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Status published Medium CVE-2023-4378

Insertion of Sensitive Information Into Sent Data in GitLab

Vulnerability Description

An issue has been discovered in GitLab CE/EE affecting all versions starting from 11.8 before 16.1.5, all versions starting from 16.2 before 16.2.5, all versions starting from 16.3 before 16.3.1. A malicious Maintainer can, under specific circumstances, leak the sentry token by changing the configured URL in the Sentry error tracking settings page. This was as a result of an incomplete fix for CVE-2022-4365.

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 [70rpedo](https://hackerone.com/70rpedo) for reporting this vulnerability through our HackerOne bug bounty program

Affected Vendor

Affected Software

GitLab
Vulnerable Versions:
11.8, 16.2, 16.3

Timeline

Official Publish: September 1st, 2023
Last Modified: April 24th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

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

Weaknesses (CWE)