CVE-2026-41891: CI4MS has a Deactivated User Session Bypass (active=0)

medium Affects ci4-cms-erp/ci4ms. Feed 2026.10.29.1, updated 2026-10-28; published 2026-05-04; advisory modified 2026-05-08.

CI4MS has a Deactivated User Session Bypass (active=0)

Package: ci4-cms-erp/ci4ms Composer
Affected versions: >=0.26.0 and <0.31.8.0
Fixed in: 0.31.8.0
Severity: medium
Exploitation: not on CISA KEV · EPSS 0% (19.1th percentile)
Published: 2026-05-04
Source: osv.dev

References

CWE-613

NVD record ci4-cms-erp/ci4ms advisories

Am I affected?

Find out in one command. phpwarden checks your composer.lock against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

# one-time install
pip install phpwarden

# then
phpwarden deps composer.lock

Or keep it checked automatically: GitHub Action · pre-commit hook · GitLab CI · Laravel artisan command

Install docs How findings are ranked

Related advisories

CVE-2026-25510 critical CI4MS Vulnerable to Remote Code Execution (RCE) via Arbitrary File Creation and Save in Fi same package: ci4-cms-erp/ci4ms
CVE-2026-41202 critical CI4MS Backup::restore is vulnerable to Zip Slip leading to RCE same package: ci4-cms-erp/ci4ms
CVE-2026-41587 high CI4MS has Unrestricted PHP File Upload via Theme Installation that Leads to Authenticated same package: ci4-cms-erp/ci4ms
CVE-2026-41203 critical CI4MS Theme::upload is vulnerable to Zip Slip leading to RCE same package: ci4-cms-erp/ci4ms
CVE-2026-39394 high CI4MS Vulnerable to .env CRLF Injection via Unvalidated `host` Parameter in Install Contro same package: ci4-cms-erp/ci4ms
CVE-2026-34570 high CI4MS: Account Deletion Module Grants Full Persistent Unauthorized Access for All‑Roles vi same package: ci4-cms-erp/ci4ms