CVE-2026-34559: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in ci4-cms-erp ci4ms
CI4MS, a CodeIgniter 4-based CMS, contained a stored cross-site scripting (XSS) vulnerability in versions prior to 0. 31. 0. 0. The vulnerability arises from improper sanitization of user input in the blog tag name field, allowing attackers to inject malicious JavaScript payloads. These payloads are stored server-side and rendered unsafely on public and administrative tag pages without proper output encoding. This issue has been addressed and patched in version 0. 31. 0. 0.
AI Analysis
Technical Summary
CVE-2026-34559 is a stored cross-site scripting (XSS) vulnerability in the ci4ms product of the ci4-cms-erp project. Before version 0.31.0.0, the application does not properly neutralize user-controlled input when creating or editing blog tags, specifically the tag name field. Malicious JavaScript code injected into this field is stored on the server and later rendered unsafely in both public and administrative interfaces, leading to stored XSS. The vulnerability has a CVSS 3.1 score of 9.1, indicating critical severity. The issue was patched in version 0.31.0.0.
Potential Impact
Successful exploitation allows an attacker with at least low privileges to inject persistent malicious scripts that execute in the context of users viewing affected tag pages or administrative interfaces. This can lead to high confidentiality impact by stealing sensitive information, limited integrity impact, and limited availability impact. The vulnerability affects all versions prior to 0.31.0.0.
Mitigation Recommendations
Upgrade to ci4ms version 0.31.0.0 or later, where the vulnerability has been patched. No other mitigations are specified or required once the official fix is applied.
CVE-2026-34559: CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in ci4-cms-erp ci4ms
Description
CI4MS, a CodeIgniter 4-based CMS, contained a stored cross-site scripting (XSS) vulnerability in versions prior to 0. 31. 0. 0. The vulnerability arises from improper sanitization of user input in the blog tag name field, allowing attackers to inject malicious JavaScript payloads. These payloads are stored server-side and rendered unsafely on public and administrative tag pages without proper output encoding. This issue has been addressed and patched in version 0. 31. 0. 0.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-34559 is a stored cross-site scripting (XSS) vulnerability in the ci4ms product of the ci4-cms-erp project. Before version 0.31.0.0, the application does not properly neutralize user-controlled input when creating or editing blog tags, specifically the tag name field. Malicious JavaScript code injected into this field is stored on the server and later rendered unsafely in both public and administrative interfaces, leading to stored XSS. The vulnerability has a CVSS 3.1 score of 9.1, indicating critical severity. The issue was patched in version 0.31.0.0.
Potential Impact
Successful exploitation allows an attacker with at least low privileges to inject persistent malicious scripts that execute in the context of users viewing affected tag pages or administrative interfaces. This can lead to high confidentiality impact by stealing sensitive information, limited integrity impact, and limited availability impact. The vulnerability affects all versions prior to 0.31.0.0.
Mitigation Recommendations
Upgrade to ci4ms version 0.31.0.0 or later, where the vulnerability has been patched. No other mitigations are specified or required once the official fix is applied.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-03-30T16:31:39.265Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69cec35ae6bfc5ba1dfb4d0a
Added to database: 4/2/2026, 7:28:26 PM
Last enriched: 4/10/2026, 12:02:26 AM
Last updated: 5/20/2026, 6:51:33 AM
Views: 59
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