GitLab 19.2 < 19.3.6 / 19.4 < 19.4.3 / 19.5 < 19.5.1 (CVE-2026-103515)

low Nessus Plugin ID 370166

Synopsis

The version of GitLab installed on the remote host is affected by a vulnerability.

Description

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 19.2 before 19.3.6, 19.4 before 19.4.3, and 19.5 before 19.5.1 that, when an instance administrator locked a group's Duo availability, an authenticated user with group Owner permissions could have re-enabled AI-backed data egress to a third- party service for that group and its descendant projects, due to insufficient granularity of the admin- lock enforcement controls. (CVE-2026-103515)

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

Solution

Upgrade to GitLab version 19.3.6, 19.4.3, 19.5.1 or later.

See Also

https://gitlab.com/gitlab-org/gitlab/-/work_items/631564

https://hackerone.com/reports/3871692

http://www.nessus.org/u?44777050

http://www.nessus.org/u?b7e9739c

Plugin Details

Severity: Low

ID: 370166

File Name: gitlab_cve-2026-103515.nasl

Version: 1.1

Type: Combined

Agent: unix

Family: CGI abuses

Published: 10/21/2026

Updated: 10/21/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

CVSS v2

Risk Factor: Low

Base Score: 3.3

Temporal Score: 2.4

Vector: CVSS2#AV:N/AC:L/Au:M/C:N/I:P/A:N

CVSS Score Source: CVE-2026-103515

CVSS v3

Risk Factor: Low

Base Score: 2.7

Temporal Score: 2.4

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:gitlab:gitlab

Required KB Items: installed_sw/GitLab

Exploit Ease: No known exploits are available

Patch Publication Date: 10/21/2026

Vulnerability Publication Date: 10/21/2026

Reference Information

CVE: CVE-2026-103515