CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to 0.31.4.0, This vulnerability is fixed in 0.31.4.0.
CVE-2026-39389
MEDIUMNVD 6.76.7—Elevated
EchelonGraph scoreMEDIUM confidence
This medium-severity CVE scores 6.7 under NVD CVSS v3. EPSS exploit probability: 0.0%, top 93% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
Triggered by: NVD CVSS baseline
Sources: epss, nvd
6.7
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
- Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS: 0%CVSS: 6.7Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.7
- EG Score
- 6.7(medium)
- EPSS
- 37.5%
- KEV
- Not listed
Published
April 8, 2026
Last Modified
April 16, 2026
Advisory Details (1)
Auto-updated Jun 15, 2026🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available
Hidden Items Authorization Bypass in Fileeditor Allows Reading Secrets and Writing Protected Files · Advisory · ci4-cms-erp/ci4ms · GitHub
https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-9rxp-f27p-wv3hAffected Packages
(1 across 1 ecosystem)
Packagist(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| ci4-cms-erp/ci4ms | 0.21.0 ... 0.31.3.0 (51 versions) | 0.31.4.0 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Frequently asked(5)
What is CVE-2026-39389?
CVE-2026-39389 is a medium vulnerability published on April 8, 2026. CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to 0.31.4.0, This vulnerability is fixed in 0.31.4.0.
When was CVE-2026-39389 disclosed?
CVE-2026-39389 was first published in the National Vulnerability Database on April 8, 2026, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-39389 actively exploited?
CVE-2026-39389 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 37.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-39389?
CVE-2026-39389 has a CVSS v3 base score of 6.7 (NVD).
How do I remediate CVE-2026-39389?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-39389, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-39389
Is Your Infrastructure Affected by CVE-2026-39389?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.