CVE-2026-41202
CVE-2026-41202 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.4. 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-22.
Key facts
- Severity: Critical (CVSS 4.0 base score 9.4)
- EPSS exploit prediction: 1% (41st percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-28255
- Weakness: CWE-22
- Published:
- Last modified:
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 0.31.5.0, ci4ms Backup::restore extracts user uploaded ZIP archives without validating entry names, allowing an authenticated backend user with the backup create permission to write files to arbitrary filesystem locations (Zip Slip) and achieve remote code execution by dropping a PHP file under the public web root. This issue has been patched in version 0.31.5.0.
Frequently asked questions
- What is CVE-2026-41202?
- CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to version 0.31.5.0, ci4ms Backup::restore extracts user uploaded ZIP archives without validating entry names, allowing an authenticated backend user with the backup create permission to write files to arbitrary filesystem locations (Zip Slip) and achieve remote code execution by dropping a PHP file under the public web root. This issue has been patched in version 0.31.5.0.
- How severe is CVE-2026-41202?
- CVE-2026-41202 has a CVSS 4.0 base score of 9.4, rated critical severity.
- Is CVE-2026-41202 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (41st percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2026-41202?
- 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-2026-41202 have an EU (EUVD) identifier?
- Yes. CVE-2026-41202 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28255.
- When was CVE-2026-41202 published?
- CVE-2026-41202 was published on 2026-05-07 and last updated on 2026-06-17.
References
- https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.5.0
- https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-xp9f-pvvc-57p4
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