What is CVE-2026-3855?

CVE-2026-3855 is a low-severity vulnerability in GitLab, classified under Resource Injection. CVSS score: 3.1/10. Published 2026-09-16.

How severe is CVE-2026-3855?

Low severity. CVSS v3 base score is 3.1 out of 10.

Vulnerability in GitLab

CVE-2026-3855

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 v3 metric

CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Gitlab

Weakness classification (CWE)

CWE-99 — Resource Injection

References

cve@gitlab.com
cve@gitlab.com (technical-description, permissions-required, exploit)
cve@gitlab.com

Frequently asked questions

What is CVE-2026-3855?: CVE-2026-3855 is a low-severity vulnerability in GitLab, classified under Resource Injection. CVSS score: 3.1/10. Published 2026-09-16.
How severe is CVE-2026-3855?: Low severity. CVSS v3 base score is 3.1 out of 10.