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CVE-2026-55742— Cotonti CSRF in admin.rights.php allows privilege escalation

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版本存在跨站请求伪造漏洞，该漏洞源于管理权限处理程序中跨站请求伪造问题，在system/admin/admin.rights.php文件中，权限更新操作未调用cot_check_xg()验证反CSRF令牌，可能导致远程攻击者诱骗经过身份验证的管理员访问恶意页面，提交伪造请求以授权攻击者控制的组提升权限至管理员，进而可用于远程代码执行。

CVSS 9.6 · Critical EPSS 0.21% · P10

Affected Version Matrix 1

VendorProduct Version RangeStatus
Cotonti Cotonti 1.0.0 affected
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I. Basic Information for CVE-2026-55742

Vulnerability Information
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Vulnerability Title
Cotonti CSRF in admin.rights.php allows privilege escalation
Source: CVE Program / CVE List V5
Vulnerability Description
Cotonti 1.0.0 (master branch, commit f43f1fc3) is vulnerable to Cross-Site Request Forgery in the administration rights handler. In system/admin/admin.rights.php, the rights update action ('a=update') modifies group access rights (including via cot_auth_add_group) without calling cot_check_xg to validate the anti-CSRF token.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Cotonti 跨站请求伪造漏洞
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版本存在跨站请求伪造漏洞，该漏洞源于管理权限处理程序中跨站请求伪造问题，在system/admin/admin.rights.php文件中，权限更新操作未调用cot_check_xg()验证反CSRF令牌，可能导致远程攻击者诱骗经过身份验证的管理员访问恶意页面，提交伪造请求以授权攻击者控制的组提升权限至管理员，进而可用于远程代码执行。
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-2026-55742

# POC Description Source Link Shenlong Link
AI-Generated POC Verified env Premium
Qwen3.6-35B-A3B · 7888 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
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-55742

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Patches & Fixes for CVE-2026-55742 (1)

Vendor Pages for CVE-2026-55742 (1)

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

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-2026-55746 7.6 HIGH Cotonti stored XSS via PFS folder title
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-352

V. Comments for CVE-2026-55742

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