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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

Critical severity GitHub Reviewed Published Apr 2, 2026 in ci4-cms-erp/ci4ms • Updated Apr 30, 2026

Package

composer ci4-cms-erp/ci4ms (Composer)

Affected versions

<= 0.31.1.0

Patched versions

0.31.2.0

Description

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

References

@bertugfahriozer bertugfahriozer published to ci4-cms-erp/ci4ms Apr 2, 2026
Published by the National Vulnerability Database Apr 6, 2026
Published to the GitHub Advisory Database Apr 6, 2026
Reviewed Apr 6, 2026
Last updated Apr 30, 2026

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
High
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(37th percentile)

Weaknesses

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Learn more on MITRE.

CVE ID

CVE-2026-35035

GHSA ID

GHSA-5ghq-42rg-769x

Source code

Credits

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