How severe is CVE-2026-39389?

CVE-2026-39389 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.

Is CVE-2026-39389 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-39389?

CVE-2026-39389 affects Ci4-cms-erp Ci4ms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-39389?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-39389 have an EU (EUVD) identifier?

Yes. CVE-2026-39389 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20481.

When was CVE-2026-39389 published?

CVE-2026-39389 was published on 2026-04-08 and last updated on 2026-06-17.

CVE-2026-39389

CVE-2026-39389 is a medium-severity vulnerability in Ci4-cms-erp Ci4ms with a CVSS 3.x base score of 6.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-285.

Key facts

Severity: Medium (CVSS 3.x base score 6.7)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-20481
Weakness: CWE-285
Affected product: Ci4-cms-erp Ci4ms
Published: 2026-04-08
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-39389?: 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.
How severe is CVE-2026-39389?: CVE-2026-39389 has a CVSS 3.x base score of 6.7, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability low.
Is CVE-2026-39389 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-39389?: CVE-2026-39389 affects Ci4-cms-erp Ci4ms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-39389?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-39389 have an EU (EUVD) identifier?: Yes. CVE-2026-39389 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-20481.
When was CVE-2026-39389 published?: CVE-2026-39389 was published on 2026-04-08 and last updated on 2026-06-17.

References

https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-9rxp-f27p-wv3h

Affected products (1)

cpe:2.3:a:ci4-cms-erp:ci4ms:*:*:*:*:*:*:*:*

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