Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-3855

CVE-2026-3855MEDIUM

GitLab GitLab — Improper Control of Resource Identifiers ('Resource Injection') in GitLab

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   H   L   N  U  H  N  H    6.8   .0034   25.3     —

AFFECTED
  Product  Versions  Fixed
  GitLab   18.2.7 –  —

TIMELINE
  Mar 9   Reserved by GitLab
  Sep 16  Published (CNA: GitLab)
  Sep 28  RESCORED — CVE-2026-3855 (GitLab). CVSS 3.1 → 6.8 (NVD).

CWE-99 · CNA: GitLab · CVSS v3.1 · 3 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
March 9, 2026	Reserved	Reserved by GitLab
September 16, 2026	Published	Published (CNA: GitLab)
September 28, 2026	RESCORED	RESCORED — CVE-2026-3855 (GitLab). CVSS 3.1 → 6.8 (NVD).

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
GitLab	GitLab	—	18.2.7	—

Weaknesses

CWE-99

References (3)

https://docs.gitlab.com/releases/patches/patch-release-gitlab-19-3-2-released/ [Release Notes, Vendor Advisory]
https://gitlab.com/gitlab-org/gitlab/-/work_items/592821 [Broken Link]
https://hackerone.com/reports/3575167 [Permissions Required]

Authoritative record: CVE-2026-3855 at cve.org

Vendors: gitlab

Weaknesses: CWE-99

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-3855 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.