title: Exposure of Sensitive Information to an Unauthorized Actor in GitLab
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.
problem types: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
affected:
{
vendor: GitLab
product: GitLab
repo: git://git@gitlab.com:gitlab-org/gitlab.git
versions:
version: 16.0, status: affected, lessThan: 16.3.6, versionType: semver
version: 16.4, status: affected, lessThan: 16.4.2, versionType: semver
version: 16.5, status: affected, lessThan: 16.5.1, versionType: semver
defaultStatus: unaffected
}
metrics:
format: CVSS
scenarios: GENERAL
cvssV3_1: [
version: 3.1
vectorString: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
attackVector: NETWORK
attackComplexity: HIGH
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: LOW
integrityImpact: NONE
availabilityImpact: NONE
baseScore: 3.7
baseSeverity: LOW
]
solutions: 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.