Detections
Analytics
GitLab 18.2.7 < 19.1.8 / 19.2 < 19.2.6 / 19.3 < 19.3.2 (CVE-2026-3855)
low Nessus Plugin ID 346276
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 18.2.7 before 19.1.8, 19.2 before 19.2.6, and 19.3 before 19.3.2 that under certain conditions could have allowed an authenticated user with project-level permissions to access restricted file contents on the server or cause denial of service due to improper validation of parameters in the Terraform state upload functionality.
(CVE-2026-3855)
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 19.1.8, 19.2.6, 19.3.2 or later.See Also
https://gitlab.com/gitlab-org/gitlab/-/work_items/592821
https://hackerone.com/reports/3575167
Plugin Details
Severity: Low
ID: 346276
File Name: gitlab_cve-2026-3855.nasl
Version: 1.1
Type: Combined
Agent: unix
Family: CGI abuses
Published: 9/16/2026
Updated: 9/16/2026
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-2026-3855
CVSS v3
Risk Factor: Low
Base Score: 3.1
Temporal Score: 2.7
Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/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: 9/16/2026
Vulnerability Publication Date: 9/13/2026
Reference Information
CVE: CVE-2026-3855