How severe is CVE-2026-34568?

CVE-2026-34568 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.

Is CVE-2026-34568 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-34568?

CVE-2026-34568 affects Ci4-cms-erp Ci4ms. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-34568?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-34568 have an EU (EUVD) identifier?

Yes. CVE-2026-34568 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18082.

When was CVE-2026-34568 published?

CVE-2026-34568 was published on 2026-04-01 and last updated on 2026-06-17.

CVE-2026-34568

CVE-2026-34568 is a critical-severity vulnerability in Ci4-cms-erp Ci4ms with a CVSS 3.x base score of 9.1. 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-79.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-18082
Weakness: CWE-79
Affected product: Ci4-cms-erp Ci4ms
Published: 2026-04-01
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 version 0.31.0.0, the application fails to properly sanitize user-controlled input when creating or editing blog posts. An attacker can inject a malicious JavaScript payload into blog post content, which is then stored server-side. This stored payload is later rendered unsafely in multiple application views without proper output encoding, leading to stored cross-site scripting (XSS). This issue has been patched in version 0.31.0.0.

Frequently asked questions

What is CVE-2026-34568?: CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to version 0.31.0.0, the application fails to properly sanitize user-controlled input when creating or editing blog posts. An attacker can inject a malicious JavaScript payload into blog post content, which is then stored server-side. This stored payload is later rendered unsafely in multiple application views without proper output encoding, leading to stored cross-site scripting (XSS). This issue has been patched in version 0.31.0.0.
How severe is CVE-2026-34568?: CVE-2026-34568 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.
Is CVE-2026-34568 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-34568?: CVE-2026-34568 affects Ci4-cms-erp Ci4ms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-34568?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-34568 have an EU (EUVD) identifier?: Yes. CVE-2026-34568 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-18082.
When was CVE-2026-34568 published?: CVE-2026-34568 was published on 2026-04-01 and last updated on 2026-06-17.

References

Affected products (1)

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

More vulnerabilities in Ci4-cms-erp Ci4ms

CVE-2026-34571 — Critical (CVSS 9.9): CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC…
CVE-2026-34569 — Critical (CVSS 9.9): CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC…
CVE-2026-25510 — Critical (CVSS 9.9): CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC…
CVE-2026-34567 — Critical (CVSS 9.1): CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC…
CVE-2026-34566 — Critical (CVSS 9.1): CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC…
CVE-2026-34565 — Critical (CVSS 9.1): CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC…

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