{
    "document": {
        "category": "csaf_base",
        "csaf_version": "2.0",
        "distribution": {
            "tlp": {
                "label": "WHITE"
            }
        },
        "lang": "en",
        "notes": [
            {
                "category": "legal_disclaimer",
                "text": "The Netherlands Cyber Security Center (henceforth: NCSC-NL) maintains this portal to enhance access to its information and vulnerabilities. The use of this information is subject to the following terms and conditions:\n\nThe vulnerabilities disclosed in this portal are gathered by NCSC-NL from a variety of open sources, which the user can retrieve from other platforms. NCSC-NL makes every reasonable effort to ensure that the content of this portal is kept up to date, and that it is accurate and complete. Nevertheless, NCSC-NL cannot entirely rule out the possibility of errors, and therefore cannot give any warranty in respect of its completeness, accuracy or real-time keeping up-to-date. NCSC-NL does not control nor guarantee the accuracy, relevance, timeliness or completeness of information obtained from these external sources. The vulnerabilities disclosed in this portal are intended solely for the convenience of professional parties to take appropriate measures to manage the risks posed to the cybersecurity. No rights can be derived from the information provided therein.\n\nNCSC-NL and the Kingdom of the Netherlands assume no legal liability or responsibility for any damage resulting from either the use or inability of use of the vulnerabilities disclosed in this portal. This includes damage resulting from the inaccuracy of incompleteness of the information contained in it.\nThe information on this page is subject to Dutch law. All disputes related to or arising from the use of this portal regarding the disclosure of vulnerabilities will be submitted to the competent court in The Hague. This choice of means also applies to the court in summary proceedings."
            }
        ],
        "publisher": {
            "category": "coordinator",
            "contact_details": "cert@ncsc.nl",
            "name": "National Cyber Security Centre",
            "namespace": "https://www.ncsc.nl/"
        },
        "title": "CVE-2026-34562",
        "tracking": {
            "current_release_date": "2026-04-02T15:00:40.073323Z",
            "generator": {
                "date": "2026-02-17T15:00:00Z",
                "engine": {
                    "name": "V.E.L.M.A",
                    "version": "1.7"
                }
            },
            "id": "CVE-2026-34562",
            "initial_release_date": "2026-04-01T22:38:56.388761Z",
            "revision_history": [
                {
                    "date": "2026-04-01T22:38:56.388761Z",
                    "number": "1",
                    "summary": "CVE created.| Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| Products connected (1).| References created (2).| CWES updated (1)."
                },
                {
                    "date": "2026-04-01T22:38:59.310674Z",
                    "number": "2",
                    "summary": "NCSC Score created."
                },
                {
                    "date": "2026-04-01T23:02:37.118004Z",
                    "number": "3",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)."
                },
                {
                    "date": "2026-04-01T23:02:40.366673Z",
                    "number": "4",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-04-01T23:29:12.382479Z",
                    "number": "5",
                    "summary": "Source created.| CVE status created. (valid)| Description created for source.| CVSS created.| References created (2).| CWES updated (1)."
                },
                {
                    "date": "2026-04-01T23:29:14.139476Z",
                    "number": "6",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-04-02T11:35:32.541538Z",
                    "number": "7",
                    "summary": "NCSC Score updated."
                },
                {
                    "date": "2026-04-02T14:59:04.980256Z",
                    "number": "8",
                    "summary": "Source connected.| CVE status created. (valid)| EPSS created."
                },
                {
                    "date": "2026-04-02T14:59:09.802767Z",
                    "number": "9",
                    "summary": "NCSC Score updated."
                }
            ],
            "status": "interim",
            "version": "9"
        }
    },
    "product_tree": {
        "branches": [
            {
                "branches": [
                    {
                        "branches": [
                            {
                                "category": "product_version_range",
                                "name": "vers:unknown/<0.31.0.0",
                                "product": {
                                    "name": "vers:unknown/<0.31.0.0",
                                    "product_id": "CSAFPID-5965630"
                                }
                            }
                        ],
                        "category": "product_name",
                        "name": "ci4ms"
                    }
                ],
                "category": "vendor",
                "name": "ci4-cms-erp"
            }
        ]
    },
    "vulnerabilities": [
        {
            "cve": "CVE-2026-34562",
            "cwe": {
                "id": "CWE-79",
                "name": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"
            },
            "notes": [
                {
                    "category": "description",
                    "text": "CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to version 0.31.0.0, 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. This issue has been patched in version 0.31.0.0.",
                    "title": "cveprojectv5 - https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/34xxx/CVE-2026-34562.json"
                },
                {
                    "category": "description",
                    "text": "## Summary\n### **Vulnerability: Stored DOM XSS via System Settings – Company Information (Same-Page Attribute Breakout & Persistent Payload Injection)**\n- Stored Cross-Site Scripting via Unsanitized Company Information Configuration Fields with Immediate Same-Page Execution\n\n### Description\nThe 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.\n\nAffected fields include, but are not limited to:\n1. Company Name\n2. Slogan\n3. Company Phone\n4. Company Mobile\n5. Company Email\n6. Google Maps iframe link\n7. Company Logo and other media-related fields\n\nUnlike the public-facing landing page injection vulnerability, this issue executes directly on the same settings page. The injected payload breaks out of the HTML attribute context and is immediately interpreted by the browser when rendered, resulting in same-page DOM-based stored XSS.\n\nThis represents different functionality and a separate vulnerability from public-facing rendering.\n\n### Affected Functionality\n- System Settings – Company Information configuration\n- Same-page rendering of user-controlled input fields\n- DOM attribute injection within form inputs\n- Storage and retrieval of company information values\n\n### Attack Scenario\n- An attacker injects a malicious JavaScript payload into one or more Company Information fields.\n- The payload breaks out of the HTML attribute context.\n- The application stores and re-renders the payload without sanitization or encoding.\n- The payload executes immediately on the same settings page.\n- The script executes in the browser context of the authenticated user managing settings.\n\n### Impact\n- Persistent Stored XSS\n- Immediate Same-Page DOM XSS execution\n- Execution of arbitrary JavaScript in victims’ browsers\n- Administrative privilege escalation\n- Full administrator account takeover\n- Full account takeover across all roles\n- Full compromise of the entire platform\n\nEndpoints:\n- `/backend/settings/` (Company Information)\n\n## Steps To Reproduce (POC)\n1. Navigate to System Settings -> Company Information\n2. Insert the following XSS payload into any Company Information field:\n`test\"><img src=1 onerror=alert()>\" class=\"form-control\" placeholder=\"Name\" required>`\n3. Save the settings\n4. Observe that the payload breaks out of the input attribute context\n5. The XSS executes immediately on the same page\n\n## Remediation\n\n- **Avoid unsafe DOM manipulation methods:** Do not use `.html()`, `innerHTML`, or similar sink functions in client-side JavaScript or server-side templating (e.g., PHP). Even when user input flowing into these sinks is not immediately apparent, they can introduce Cross-Site Scripting (XSS) vulnerabilities that an attacker may exploit.\n\n- **Apply output encoding:** Implement HTML entity encoding on all user-controlled data before rendering it in the browser. This helps neutralize potentially malicious input.\n\n- **Implement input sanitization:** Ensure that all user-supplied input is properly sanitized before processing or output. Currently, no sanitization mechanisms are in place, which should be addressed as a priority.\n\n- **Enforce security headers and cookie attributes:**\n  - **Content Security Policy (CSP):** Define and enforce a strict CSP to limit the execution of unauthorized scripts.\n  - **HttpOnly flag:** Set the `HttpOnly` attribute on session cookies to prevent client-side script access.\n  - **SameSite attribute:** Configure the `SameSite` cookie attribute to mitigate Cross-Site Request Forgery (CSRF) risks.\n  - **Secure flag:** Ensure all cookies are transmitted only over HTTPS by enabling the `Secure` attribute.\n\n  These measures collectively reduce the impact of XSS and help prevent escalation paths such as CSRF via XSS.\n\n# Ready Video POC:\nhttps://mega.nz/file/qEcFUIjR#2OKX78JgPQI2x5957GE-vx1zYzJv2a9JqjyBsrRFBkk",
                    "title": "github - https://api.github.com/advisories/GHSA-v897-c6vq-6cr3"
                },
                {
                    "category": "description",
                    "text": "CI4MS is a CodeIgniter 4-based CMS skeleton that delivers a production-ready, modular architecture with RBAC authorization and theme support. Prior to version 0.31.0.0, 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. This issue has been patched in version 0.31.0.0.",
                    "title": "nvd - https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-34562"
                },
                {
                    "category": "other",
                    "text": "0.00038",
                    "title": "EPSS"
                },
                {
                    "category": "other",
                    "text": "3.8",
                    "title": "NCSC Score"
                },
                {
                    "category": "other",
                    "text": "There is cwe data available from source Nvd, The value of the most recent CVSS (V3) score, Is related to CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'))",
                    "title": "NCSC Score top decreasing factors"
                }
            ],
            "product_status": {
                "known_affected": [
                    "CSAFPID-5965630"
                ]
            },
            "references": [
                {
                    "category": "external",
                    "summary": "Source - cveprojectv5",
                    "url": "https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/34xxx/CVE-2026-34562.json"
                },
                {
                    "category": "external",
                    "summary": "Source - github",
                    "url": "https://api.github.com/advisories/GHSA-v897-c6vq-6cr3"
                },
                {
                    "category": "external",
                    "summary": "Source - nvd",
                    "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-34562"
                },
                {
                    "category": "external",
                    "summary": "Source - first",
                    "url": "https://api.first.org/data/v1/epss?limit=10000&offset=0"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; github; nvd",
                    "url": "https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-v897-c6vq-6cr3"
                },
                {
                    "category": "external",
                    "summary": "Reference - cveprojectv5; nvd",
                    "url": "https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0"
                },
                {
                    "category": "external",
                    "summary": "Reference - github",
                    "url": "https://github.com/advisories/GHSA-v897-c6vq-6cr3"
                }
            ],
            "scores": [
                {
                    "cvss_v3": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L",
                        "baseScore": 4.7,
                        "baseSeverity": "MEDIUM"
                    },
                    "products": [
                        "CSAFPID-5965630"
                    ]
                }
            ],
            "title": "CVE-2026-34562"
        }
    ]
}