Secret disclosure and code execution via unchecked paths
Published Apr 8, 2026 · Updated Apr 8, 2026
Improper authorization in CI4MS before 0.31.4.0 allows remote authenticated users to read or alter protected application files. The Fileeditor controller checks its hiddenItems list only when listing files; readFile and the write, rename, create, and delete endpoints accept protected paths without that check. A backend session with fileeditor.read exposes secrets such as .env, while update access can replace composer.json and execute a malicious Composer script during a later install or update.
Summary
What happened
Improper authorization in CI4MS before 0.31.4.0 allows remote authenticated users to read or alter protected application files. The Fileeditor controller checks its hiddenItems list only when listing files; readFile and the write, rename, create, and delete endpoints accept protected paths without that check. A backend session with fileeditor.read exposes secrets such as .env, while update access can replace composer.json and execute a malicious Composer script during a later install or update.
The record
- CVE
- CVE-2026-39389
- Published
- Apr 8, 2026
- Updated
- Apr 8, 2026
- Vendor
- Ci4MS
- Product
- CI4MS
- Classifications
- CWE-285, T1059, T1005
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 8, 2026CVE publishedPublication date reported by the CVE source.
- Apr 8, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 0.31.4.0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GitHub advisory Fileeditor curl proof of conceptproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo