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CVE-2026-55746— Cotonti stored XSS via PFS folder title

Quick assessment

Affected
Cotonti Cotonti
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cotonti Cotonti是Cotonti团队的一个内容管理系统。 Cotonti 1.0.0版本存在跨站脚本漏洞，该漏洞源于Personal File Storage模块中文件夹标题（pff_title）使用'TXT'过滤器导入时未清理或编码HTML，且模板变量输出未转义，可能导致存储型跨站脚本攻击。

CVSS 7.6 · High EPSS 0.30% · P21

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
Cotonti Cotonti 1.0.0 affected
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I. Basic Information for CVE-2026-55746

Vulnerability Information
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Vulnerability Title
Cotonti stored XSS via PFS folder title
Source: CVE Program / CVE List V5
Vulnerability Description
Cotonti 1.0.0 (master branch, commit f43f1fc3) is vulnerable to stored Cross-Site Scripting in the Personal File Storage (PFS) module. A folder title (pff_title) is imported with the 'TXT' filter, which does not strip or encode HTML (the tag check in cot_import is disabled), so an authenticated user can store HTML/JavaScript in a folder title.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
Vulnerability Title
Cotonti 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cotonti Cotonti是Cotonti团队的一个内容管理系统。 Cotonti 1.0.0版本存在跨站脚本漏洞，该漏洞源于Personal File Storage模块中文件夹标题（pff_title）使用'TXT'过滤器导入时未清理或编码HTML，且模板变量输出未转义，可能导致存储型跨站脚本攻击。
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)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cotonti Cotonti 1.0.0 -

II. Public POCs for CVE-2026-55746

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6733 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
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III. Intelligence Information for CVE-2026-55746

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Patches & Fixes for CVE-2026-55746 (1)

Vendor Pages for CVE-2026-55746 (1)

Same Patch Batch · Cotonti · 2026-06-18 · 5 CVEs total

CVE-2026-55742 9.6 CRITICAL Cotonti CSRF in admin.rights.php allows privilege escalation
CVE-2026-55741 8.8 HIGH Cotonti CSRF in admin.config.php allows unauthorized configuration changes
CVE-2026-55744 8.1 HIGH Cotonti CSRF in PFS allows forced arbitrary file upload
CVE-2026-55745 5.4 MEDIUM Cotonti CSRF in PFS folder edit allows unauthorized folder modification

IV. Related Vulnerabilities

Same product: Cotonti
Same vendor: Cotonti
Same weakness: CWE-79

V. Comments for CVE-2026-55746

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