CVE-2023-5831 - CVE House
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Status published Low CVE-2023-5831

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 16.0 before 16.3.6, all versions starting from 16.4 before 16.4.2, and all versions starting from 16.5.0 before 16.5.1 which have the `super_sidebar_logged_out` feature flag enabled. Affected versions with this default-disabled feature flag enabled may unintentionally disclose GitLab version metadata to unauthorized actors.

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:

  • This vulnerability was discovered internally by the GitLab team

References

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Affected Vendor

Affected Software

GitLab
Vulnerable Versions:
16.0, 16.4, 16.5

Timeline

Official Publish: November 6th, 2023
Last Modified: June 2nd, 2026
Added to House: July 22nd, 2026

CVSS Vectors

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