CVE-2023-3413 - CVE House
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Status published Medium CVE-2023-3413

Insertion of Sensitive Information Into Sent Data in GitLab

Vulnerability Description

An issue has been discovered in GitLab affecting all versions starting from 16.2 before 16.2.8, all versions starting from 16.3 before 16.3.5, all versions starting from 16.4 before 16.4.1. It was possible to read the source code of a project through a fork created before changing visibility to only project members.

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 [shells3c](https://hackerone.com/shells3c) for reporting this vulnerability through our HackerOne bug bounty program

References

More from GitLab

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CVE-2025-9825
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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:
16.2, 16.3, 16.4

Timeline

Official Publish: September 29th, 2023
Last Modified: November 20th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

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

Weaknesses (CWE)

CWE-201

MITRE ATT&CK TTPs

T1041 Exfiltration Over C2 Channel
Exfiltration
T1040 Network Sniffing
Credential Access
T1557 Adversary-in-the-Middle
Collection
T1552 Unsecured Credentials
Credential Access
T1078 Valid Accounts
Persistence