GitLab 10.3 < 19.2.8 / 19.3 < 19.3.5 / 19.4 < 19.4.2 (CVE-2026-100104)

low Nessus Plugin ID 366185

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 CE/EE affecting all versions from 10.3 before 19.2.8, 19.3 before 19.3.5, and 19.4 before 19.4.2 that, under certain conditions, could have allowed an authenticated user to perform server-side request forgery and reach internal network resources due to a time-of-check to time- of-use race condition in URL validation during repository import operations. (CVE-2026-100104)

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 19.2.8, 19.3.5, 19.4.2 or later.

See Also

https://gitlab.com/gitlab-org/gitlab/-/work_items/594194

http://www.nessus.org/u?03fbb181

http://www.nessus.org/u?cab64376

Plugin Details

Severity: Low

ID: 366185

File Name: gitlab_cve-2026-100104.nasl

Version: 1.1

Type: Combined

Agent: unix

Family: CGI abuses

Published: 10/15/2026

Updated: 10/15/2026

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: 2.1

Temporal Score: 1.6

Vector: CVSS2#AV:N/AC:H/Au:S/C:P/I:N/A:N

CVSS Score Source: CVE-2026-100104

CVSS v3

Risk Factor: Low

Base Score: 3.5

Temporal Score: 3.1

Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/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: 10/13/2026

Vulnerability Publication Date: 10/12/2026

Reference Information

CVE: CVE-2026-100104