Security Digest · Vulnerability record
CVE-2026-35035: CI4MS: Company Information Public-Facing Page Full Platform Compromise & Full Account Takeover for All Roles & Privilege-Escalation via System Settings Company Information Stored DOM XSS
CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support.
CVSS 7.2 High EPSS 0.6% · p46
Should you act?
Normal patch cycle
No exploitation signal; fix it in your next routine update if you are affected. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.
- Not in CISA KEV, but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.6%, percentile 46: FIRST’s model estimates a 0.6% chance of exploitation activity in the next 30 days, higher than 46% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Needs an account (high (admin)). Exposure depends on who can log in.
- Only applies if your dependency tree includes
ci4-cms-erp/ci4ms(Composer (PHP)) <= 0.31.1.0, fixed in 0.31.2.0. 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 0.31.2.0, the application fails to properly sanitize user-controlled input within System Settings – Company Information. Several administrative configuration fields accept attacker-controlled input that is stored server-side and later rendered without proper output encoding. These values are persisted in the database and rendered unsafely on public-facing pages only, such as the main landing page. There is no execution in the administrative dashboard—the vulnerability only impacts the public frontend. This vulnerability is fixed in 0.31.2.0.
From the GitHub advisory
An attacker can acheive Full Account Takeover & Privilege Escalation via Stored DOM Blind XSS on public-facing landing pages through the System Settings Company Information section which allows the injection of XSS payloads
Weakness type: CWE-79.
Product: ci4-cms-erp/ci4ms (Composer (PHP)) · Assigned by: GitHub_M · Published: 2026-04-06
Affected and fixed versions
| Ecosystem | Package | Vulnerable | First fixed |
|---|---|---|---|
| Composer (PHP) | ci4-cms-erp/ci4ms | <= 0.31.1.0 | 0.31.2.0 |
| Vendor | Product | Affected versions (per CVE record) |
|---|---|---|
| ci4-cms-erp | ci4ms | < 0.31.2.0 |
Severity scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| GitHub_M | 3.1 | 7.2 High | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H |
- Attack vector: network (remotely reachable)
- Attack complexity: low
- Privileges required: high (admin)
- User interaction: none
- Scope: unchanged
CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.
Exploitation and urgency
- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc, automatable no, technical impact total.
- FIRST EPSS (model of 2026-10-21): 0.56% probability of exploitation activity in the next 30 days; percentile 46.
Timeline
- — CVE record published by GitHub_M
- — GitHub-reviewed advisory GHSA-5ghq-42rg-769x published (critical)
- — CVE record last updated
Sources and references
Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.
Vulnerability records
- GitHub Advisory GHSA-5ghq-42rg-769x github.com
- CVE.org record CVE-2026-35035 cve.org
- NVD entry CVE-2026-35035 nvd.nist.gov
Other references from the CVE record and advisory
- github.com github.com
- github.com github.com
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