CVE-2023-0838 - CVE House
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Status published Medium CVE-2023-0838

An issue has been discovered in GitLab affecting versions starting...

Vulnerability Description

An issue has been discovered in GitLab affecting versions starting from 15.1 before 15.8.5, 15.9 before 15.9.4, and 15.10 before 15.10.1. A maintainer could modify a webhook URL to leak masked webhook secrets by adding a new parameter to the url. This addresses an incomplete fix for CVE-2022-4342.

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 [0xn3va](https://hackerone.com/0xn3va) for reporting this vulnerability through our HackerOne bug bounty program

References

More from GitLab

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Insertion of Sensitive Information Into Sent Data in GitLab
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CVE-2025-9825
Missing Authorization in GitLab
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CVE-2025-9642
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in GitLab
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CVE-2025-9484
Missing Authorization in GitLab
Medium 4.3

Affected Vendor

Affected Software

GitLab
Vulnerable Versions:
>=15.1, <15.8.5, >=15.9, <15.9.4, >=15.10, <15.10.1

Timeline

Official Publish: April 5th, 2023
Last Modified: February 10th, 2025
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)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.