GitLab has remediated an issue in GitLab EE affecting all versions from 15.5 before 18.10.8, 18.11 before 18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user with group Owner role to take over another group member's GitLab account due to improper authorization in the Group SAML identity management functionality.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - GitLab has remediated an issue in GitLab EE affecting all versions from 15.5 before 18.10.8, 18.11 before     18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user     with group Owner role to take over another group member's GitLab account due to improper authorization in     the Group SAML identity management functionality. (CVE-2026-6552)

Note that Nessus relies on the presence of the package as reported by the vendor.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the ac9bab80-6618-11f1-8e04-2cf05da270f3 advisory.

    Gitlab reports:
    Improper Access Control issue in Group SAML Identity API impacts GitLab EE     Cross-site Scripting issue in Analytics Dashboard impacts GitLab EE     Denial of Service issue in Grape API JSON parsing middleware impacts GitLab CE/EE     HTML injection issue in certain group setting fields impacts GitLab EE     Denial of Service issue in Group Placeholder Reassignments API impacts GitLab CE/EE     Improper Access Control issue in Merge Requests API impacts GitLab CE/EE     Server-Side Request Forgery issue in Gitaly repository import impacts GitLab CE/EE     HTML injection issue in CI/CD Catalog impacts GitLab CE/EE     Improper Access Control issue in Security Inventory impacts GitLab EE     Authorization Bypass issue in Merge Request diff impacts GitLab CE/EE     Improper Access Control issue in Todos API impacts GitLab CE/EE     Improper Neutralization issue in Service Desk email template impacts GitLab CE/EE

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of GitLab installed on the remote host is affected by a vulnerability, as follows:

  - GitLab has remediated an issue in GitLab EE affecting all versions from 15.5 before 18.10.8, 18.11 before     18.11.5, and 19.0 before 19.0.2 that under certain conditions could have allowed an authenticated user     with group Owner role to take over another group member's GitLab account due to improper authorization in     the Group SAML identity management functionality. (CVE-2026-6552)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
320898	Linux Distros Unpatched Vulnerability : CVE-2026-6552	Nessus	Misc.	high
320876	FreeBSD : Gitlab -- vulnerabilities (ac9bab80-6618-11f1-8e04-2cf05da270f3)	Nessus	FreeBSD Local Security Checks	high
320548	GitLab 15.5 < 18.10.8 / 18.11 < 18.11.5 / 19.0 < 19.0.2 (CVE-2026-6552)	Nessus	CGI abuses	high

Detections

Analytics

CVE-2026-6552

high

Tenable Plugins

high

high

high