CVE-2026-34568: CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC a

Q: How do I fix CVE-2026-34568?

ci4ms: upgrade to 0.31.0.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-34568 being exploited?

CVE-2026-34568 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-34568 affect?

CVE-2026-34568 affects ci4ms. Severity is critical (CVSS 9.1). 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 c

Q: How urgent is CVE-2026-34568?

Priority 43/100. Critical severity; Public exploit reference

This month

CRITICAL 9.1UPGRADE

CVE-2026-34568 is a critical-severity flaw (CVSS 9.1) affecting ci4ms. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 applicat

Why this priority

Critical severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	9.1 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-79
Published	2026-04-01
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: ci4-cms-erp

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-01 22:16 UTCPublished CVE record published
2026-10-26 00:10 UTCUpdated Record last modified

ci4-cms-erp ci4ms UPGRADE

Affected: < 0.31.0.0

Fixed in: 0.31.0.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy ci4ms || rpm -q ci4ms || ci4ms --version

2. UPGRADE to 0.31.0.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade ci4ms

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade ci4ms

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-34568?

ci4ms: upgrade to 0.31.0.0. Exact commands for each OS are on this page.

Is CVE-2026-34568 being exploited?

CVE-2026-34568 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-34568 affect?

CVE-2026-34568 affects ci4ms. Severity is critical (CVSS 9.1). 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 c

How urgent is CVE-2026-34568?

Priority 43/100. Critical severity; Public exploit reference

Related CVEs

CVE-2026-35035 HIGH 7.2 UPGRADE CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC a
CVE-2026-34989 CRITICAL 9.0 UPGRADE CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC a

References

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