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Improper Access Control in GitLab EE Protected Environments API

IdentifiersCVE-2026-0934CWE-284

CVE-2026-0934 is a low-severity improper access control vulnerability in GitLab Enterprise Edition (EE) affecting all versions from 17.9 before 18.11.6, 19.0 before 19.0.3, and 19.1 before 19.1.1. Under certain conditions, an authenticated user assigned custom role permissions could use the Protected Environments API to view, create, or delete protected environment configurations even when CI/CD visibility was disabled for the project. The issue is an authorization failure in the Protected Environments API that allowed access to protected environment management operations contrary to the project’s intended CI/CD visibility restrictions.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation allows an authenticated user with custom role permissions to bypass intended project-level CI/CD visibility restrictions and interact with protected environment configurations. This can result in unauthorized disclosure of protected environment settings, unauthorized creation of new protected environment configurations, and unauthorized deletion of existing ones. The primary impact is security restriction bypass and unauthorized data manipulation within GitLab EE project environment protections.

Mitigation

If you can’t patch tonight, do this now.

If immediate patching is not possible, reduce exposure by tightly limiting assignment of custom roles and permissions related to environment and CI/CD management, reviewing which authenticated users can access Protected Environments API functionality, and monitoring for unauthorized viewing, creation, or deletion of protected environment configurations. Projects relying on disabled CI/CD visibility as a control should not assume that setting alone is sufficient until patched. Definitive mitigation information beyond upgrading is not available in the provided content.

Remediation

Patch, then assume compromise.

Upgrade GitLab EE to a fixed version: 18.11.6 or later for the 18.11 release line, 19.0.3 or later for the 19.0 release line, or 19.1.1 or later for the 19.1 release line. GitLab advised self-managed customers to upgrade immediately. GitLab.com was already patched at disclosure time, and GitLab Dedicated customers were reported as requiring no action.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
GitLabGitlabapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

4 SOURCESView more in app
What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity2

Community discussion across Reddit, Mastodon, and other social sources.

EXTERNAL REFERENCES
MITRE CVE
cve.org · CVE-2026-0934
NVD
nvd.nist.gov/vuln/detail/CVE-2026-0934
MITRE CWE · CWE-284
cwe.mitre.org