CVE-2026-34564 (GCVE-0-2026-34564)

Vulnerability from cvelistv5 – Published: 2026-04-01 21:25 – Updated: 2026-04-02 13:53

Title

CI4MS: Menu Management (Pages) Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS

Summary

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 when adding Pages to navigation menus through the Menu Management functionality. Page-related data selected via the Pages section is stored server-side and rendered without proper output encoding. This stored payload is later rendered unsafely within administrative interfaces and public-facing navigation menus, leading to stored DOM-based cross-site scripting (XSS). This issue has been patched in version 0.31.0.0.

Severity

9.1 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-02 13:53 UTC

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 8008 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/ci4-cms-erp/ci4ms/security/adv…	x_refsource_CONFIRM
https://github.com/ci4-cms-erp/ci4ms/releases/tag…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
ci4-cms-erp	ci4ms	Affected: < 0.31.0.0	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-34564

Vulnerability from fkie_nvd - Published: 2026-04-01 22:16 - Updated: 2026-10-26 22:10

Severity

9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
9.0 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Summary

References

URL	Tags
security-advisories@github.com	https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0	Release Notes
security-advisories@github.com	https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-g4pp-fhgf-8653	Exploit, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-g4pp-fhgf-8653	Exploit, Vendor Advisory

Impacted products

	Vendor	Product	Version
	ci4-cms-erp	ci4ms	*

JSON

To clipboard

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      "tags": [
        "Release Notes"
      ],
      "url": "https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-g4pp-fhgf-8653"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-g4pp-fhgf-8653"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-G4PP-FHGF-8653

Vulnerability from github – Published: 2026-04-01 22:04 – Updated: 2026-04-06 17:14

Summary

CI4MS: Menu Management (Pages) Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS

Details

Summary

Vulnerability: Stored DOM XSS via Pages Added to Menu (Persistent Payload Injection)

Stored Cross-Site Scripting via Unsafe Rendering of Page Entries in Menu Management

Description

The application fails to properly sanitize user-controlled input when adding Pages to navigation menus through the Menu Management functionality. Page-related data selected via the Pages section is stored server-side and rendered without proper output encoding.

This stored payload is later rendered unsafely within administrative interfaces and public-facing navigation menus, leading to stored DOM-based cross-site scripting (XSS).

Affected Functionality

Menu Management – Pages section
Adding pages to navigation menus
Menu storage and rendering logic

Attack Scenario

An attacker creates or controls a page containing a malicious JavaScript payload.
The attacker adds the page to the menu using the Pages functionality in Menu Manager.
The application stores the menu entry without sanitization or encoding.
The payload persists and executes whenever the menu is rendered in administrative or public-facing interfaces.

Impact

Persistent Stored DOM XSS
Execution of arbitrary JavaScript in victims’ browsers
Privilege escalation when viewed by administrators or privileged users
Full administrator account takeover
Full account takeover across all roles via the navigation menu
Full compromise of the entire application due to global execution in the navigation menu

Endpoint: - /backend/menu/

Steps To Reproduce (POC)

Navigate to the Menu Management section of the application.
Use the Pages functionality to add a page containing an XSS payload such as: <img src=x onerror=alert(document.domain)>
Save the menu entry.
View the menu in the administrative panel or any public-facing page.
Observe the JavaScript payload executing automatically when the menu is rendered.

Remediation

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.
Apply output encoding: Implement HTML entity encoding on all user-controlled data before rendering it in the browser. This helps neutralize potentially malicious input.
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.
Enforce security headers and cookie attributes:
Content Security Policy (CSP): Define and enforce a strict CSP to limit the execution of unauthorized scripts.
HttpOnly flag: Set the HttpOnly attribute on session cookies to prevent client-side script access.
SameSite attribute: Configure the SameSite cookie attribute to mitigate Cross-Site Request Forgery (CSRF) risks.
Secure flag: Ensure all cookies are transmitted only over HTTPS by enabling the Secure attribute.

These measures collectively reduce the impact of XSS and help prevent escalation paths such as CSRF via XSS.

Ready Video POC:

https://mega.nz/file/2c8lHSBQ#vwFDj0vhq7vLwMJjBjnAgbHWiIdFqUxAA913H_yQExQ

Severity

9.1 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 0.28.6.0"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "ci4-cms-erp/ci4ms"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.31.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-34564"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-01T22:04:54Z",
    "nvd_published_at": "2026-04-01T22:16:19Z",
    "severity": "CRITICAL"
  },
  "details": "## Summary  \n### **Vulnerability: Stored DOM XSS via Pages Added to Menu (Persistent Payload Injection)**\n- Stored Cross-Site Scripting via Unsafe Rendering of Page Entries in Menu Management\n\n### Description\nThe application fails to properly sanitize user-controlled input when **adding Pages to navigation menus** through the Menu Management functionality. Page-related data selected via the Pages section is stored server-side and rendered without proper output encoding.\n\nThis stored payload is later rendered unsafely within administrative interfaces and public-facing navigation menus, leading to stored DOM-based cross-site scripting (XSS).\n\n### Affected Functionality\n- Menu Management \u2013 Pages section\n- Adding pages to navigation menus\n- Menu storage and rendering logic\n\n### Attack Scenario\n- An attacker creates or controls a page containing a malicious JavaScript payload.\n- The attacker adds the page to the menu using the **Pages** functionality in Menu Manager.\n- The application stores the menu entry without sanitization or encoding.\n- The payload persists and executes whenever the menu is rendered in administrative or public-facing interfaces.\n\n### Impact\n- Persistent Stored DOM XSS\n- Execution of arbitrary JavaScript in victims\u2019 browsers\n- Privilege escalation when viewed by administrators or privileged users\n- Full administrator account takeover\n- Full account takeover across all roles via the navigation menu\n- Full compromise of the entire application due to global execution in the navigation menu\n\n**Endpoint:**\n- `/backend/menu/`\n\n## Steps To Reproduce (POC)\n1. Navigate to the **Menu Management** section of the application.\n2. Use the **Pages** functionality to add a page containing an XSS payload such as:\n`\u003cimg src=x onerror=alert(document.domain)\u003e`\n3. Save the menu entry.\n4. View the menu in the administrative panel or any public-facing page.\n5. Observe the JavaScript payload executing automatically when the menu is rendered.\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# Ready Video POC:\nhttps://mega.nz/file/2c8lHSBQ#vwFDj0vhq7vLwMJjBjnAgbHWiIdFqUxAA913H_yQExQ",
  "id": "GHSA-g4pp-fhgf-8653",
  "modified": "2026-04-06T17:14:35Z",
  "published": "2026-04-01T22:04:54Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/ci4-cms-erp/ci4ms/security/advisories/GHSA-g4pp-fhgf-8653"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34564"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ci4-cms-erp/ci4ms"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ci4-cms-erp/ci4ms/releases/tag/0.31.0.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "CI4MS: Menu Management (Pages) Full Account Takeover for All-Roles \u0026 Privilege-Escalation via Stored DOM XSS"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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CVE-2026-34564 (GCVE-0-2026-34564)

FKIE_CVE-2026-34564

GHSA-G4PP-FHGF-8653

Summary

Vulnerability: Stored DOM XSS via Pages Added to Menu (Persistent Payload Injection)

Description

Affected Functionality

Attack Scenario

Impact

Steps To Reproduce (POC)

Remediation

Ready Video POC:

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour