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CVE-2026-34563— CI4MS: Backup Management Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM Blind XSS

CVSS 9.1 · Critical EPSS 0.05% · P15
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I. Basic Information for CVE-2026-34563

Vulnerability Information
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Vulnerability Title
CI4MS: Backup Management Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM Blind XSS
Source: NVD (National Vulnerability Database)
Vulnerability Description
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 handling backup uploads and processing backup metadata. An attacker can inject a malicious JavaScript payload into the backup filename via the uploaded xss.sql, which uses SQL functionality to insert the XSS payload server-side. This stored payload is later rendered unsafely in multiple backup management views without proper output encoding, leading to stored blind cross-site scripting (Blind XSS). This issue has been patched in version 0.31.0.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: NVD (National Vulnerability Database)
Vulnerability Title
CI4MS 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CI4MS是Ci4MS开源的一个博客页面管理工具。 CI4MS 0.31.0.0之前版本存在跨站脚本漏洞，该漏洞源于处理备份上传和备份元数据时未正确清理用户输入，可能导致存储型盲跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

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Affected Products

VendorProductAffected VersionsCPESubscribe
ci4-cms-erpci4ms < 0.31.0.0 -

II. Public POCs for CVE-2026-34563

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Qwen3.6-35B-A3B · 8607 chars
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III. Intelligence Information for CVE-2026-34563

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Same Patch Batch · ci4-cms-erp · 2026-04-01 · 14 CVEs total

CVE-2026-3457110.0 CRITICALCI4MS: Stored Cross‑Site Scripting (Stored XSS) in Backend User Management Allows Session
CVE-2026-3456910.0 CRITICALCI4MS: Blogs Categories Full Account Takeover for All-Roles & Privilege-Escalation via Sto
CVE-2026-345689.1 CRITICALCI4MS: Blogs Posts Full Account Takeover for All-Roles & Privilege-Escalation via Stored D
CVE-2026-345609.1 CRITICALCI4MS: Logs Full Account Takeover for All-Roles & Privilege-Escalation via Stored DOM XSS
CVE-2026-345599.1 CRITICALCI4MS: Blogs Tags Full Account Takeover for All-Roles & Privilege-Escalation via Stored DO
CVE-2026-345679.1 CRITICALCI4MS: Blogs Posts (Categories) Full Account Takeover for All-Roles & Privilege-Escalation
CVE-2026-345669.1 CRITICALCI4MS: Pages Management Full Account Takeover for All-Roles & Privilege-Escalation via Sto
CVE-2026-345649.1 CRITICALCI4MS: Menu Management (Pages) Full Account Takeover for All-Roles & Privilege-Escalation
CVE-2026-345659.1 CRITICALCI4MS: Menu Management (Posts) Full Account Takeover for All-Roles & Privilege-Escalation
CVE-2026-345728.8 HIGHCI4MS: Account Deactivation Module Full Persistent Unauthorized Access for All‑Roles via I
CVE-2026-345708.8 HIGHCI4MS: Account Deletion Module Full Persistent Unauthorized Access for All‑Roles via Impro
CVE-2026-345624.7 MEDIUMCI4MS: System Settings (Company Information) Full Platform Compromise & Full Account Takeo
CVE-2026-345614.7 MEDIUMCI4MS: System Settings (Social Media Management) Full Platform Compromise & Full Account T

IV. Related Vulnerabilities

Same product: ci4ms
Same vendor: ci4-cms-erp
Same weakness: CWE-79

V. Comments for CVE-2026-34563

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