Medium severity · published Sep 16, 2026
CVE-2026-3855
Improper Control of Resource Identifiers ('Resource Injection') in GitLab
6.8
CVSS
0.3%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
GI
GitLab · GitLab
18.2.7 before 19.1.8; 19.2 before 19.2.6; 19.3 before 19.3.2 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-3855
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-3855
Release Notes
https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-2-released/
Broken Link
https://gitlab.com/gitlab-org/gitlab/-/work_items/592821
Permissions Required
https://hackerone.com/reports/3575167
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