---
title: "CVE-2026-25510: CI4MS Vulnerable to Remote Code Execution (RCE) via Arbitrary File Creation and Save in File Editor"
url: https://erroneo.us/security/cve/CVE-2026-25510/
description: "CVE-2026-25510 (ci4-cms-erp/ci4ms (Composer (PHP))): CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-02-03
date_modified: 2026-02-04
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-25510"
kev: false
cvss: 10
epss: 0.01051
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-25510: CI4MS Vulnerable to Remote Code Execution (RCE) via Arbitrary File Creation and Save in File Editor

**Signal:** Critical, preconditions apply. Severe if exploited, but exploitation needs conditions that may not apply to you. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 1.1% , percentile 64: FIRST’s model estimates a 1.1% chance of exploitation activity in the next 30 days, higher than 64% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.
- Only applies if your dependency tree includes ci4-cms-erp/ci4ms (Composer (PHP)) < 0.28.5.0, fixed in 0.28.5.0 . Check your lockfile, including transitive dependencies.

## What it is

CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to version 0.28.5.0, an authenticated user with file editor permissions can achieve Remote Code Execution (RCE) by leveraging the file creation and save endpoints, an attacker can upload and execute arbitrary PHP code on the server. This issue has been patched in version 0.28.5.0.

## Affected packages

- Composer (PHP) `ci4-cms-erp/ci4ms` < 0.28.5.0 → fixed: 0.28.5.0

## Affected products (CVE record)

- ci4-cms-erp ci4ms: < 0.28.5.0

## Severity

- GitHub_M CVSS 3.1: 10 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`
- GitHub CVSS 3.1: 9.9 `CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 1.05% probability of exploitation activity in the next 30 days; percentile 64.

## Sources

- [GitHub Advisory GHSA-gp56-f67f-m4px](https://github.com/advisories/GHSA-gp56-f67f-m4px)
- [CVE.org record CVE-2026-25510](https://www.cve.org/CVERecord?id=CVE-2026-25510)
- [NVD entry CVE-2026-25510](https://nvd.nist.gov/vuln/detail/CVE-2026-25510)
- [github.com](https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-gp56-f67f-m4px)
- [github.com](https://github.com/ci4-cms-erp/ci4ms/commit/86be2930d1c54eb7575102563302b2f3bafcb653)

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Source page: https://erroneo.us/security/cve/CVE-2026-25510/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt