CVE-2023-5831

Insertion of Sensitive Information Into Sent Data in GitLab

Published Nov 6, 2023 CVSS 3.1 · 3.7 Low EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Solution

Upgrade to version 16.3.6, 16.4.1, 16.5.1. Risk can also be mitigated by disabling the default-disabled `super_sidebar_logged_out` feature flag if it was previously enabled.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2023-58114 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.
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-200
Type Values Removed Values Added
Title Exposure of Sensitive Information to an Unauthorized Actor in GitLab Insertion of Sensitive Information Into Sent Data in GitLab
Weaknesses CWE-201
Type Values Removed Values Added
CPEs cpe:2.3:a:gitlab:gitlab:*:*:*:*:*:*:*:*
Weaknesses

Sources

Status
PUBLISHED
Assigner
GitLab
Published
Updated
Oct 11, 2026, 4:16 AM
Reserved
Oct 27, 2023, 5:01 PM
Status
Modified
Published
Nov 6, 2023, 11:15 AM
Modified
Jun 17, 2026, 6:49 AM