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CVE-2026-58143— Cotonti Siena 0.9.26 CSRF via admin.php Config Update Endpoint

Quick assessment

Affected
Cotonti Cotonti
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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 0.9.26及之前版本存在跨站请求伪造漏洞，该漏洞源于容易受到跨站请求伪造攻击，可能导致未经身份验证的攻击者通过诱使登录的管理员提交伪造的POST请求到admin.php配置更新处理程序，从而修改管理员配置，并可通过设置pfsfilecheck为0禁用PFS模块的文件扩展名白名单，使任何具有PFS访问权限的用户上传和执行任意PHP文件。

CVSS 8.8 · High EPSS 0.24% · P14

Affected Version Matrix 1

VendorProduct Version RangeStatus
Cotonti Cotonti ≤ 0.9.26 affected
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I. Basic Information for CVE-2026-58143

Vulnerability Information
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Vulnerability Title
Cotonti Siena 0.9.26 CSRF via admin.php Config Update Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
Cotonti Siena 0.9.26 and earlier contains a cross-site request forgery vulnerability that allows unauthenticated attackers to modify administrator configuration by tricking a logged-in administrator into submitting a forged POST request to the admin.php config update handler, which never invokes the application's CSRF validation function. Attackers can disable the PFS module's file extension whitelist by setting pfsfilecheck to 0, enabling any user with PFS access to upload and execute arbitrary PHP files on the server.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/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 0.9.26及之前版本存在跨站请求伪造漏洞，该漏洞源于容易受到跨站请求伪造攻击，可能导致未经身份验证的攻击者通过诱使登录的管理员提交伪造的POST请求到admin.php配置更新处理程序，从而修改管理员配置，并可通过设置pfsfilecheck为0禁用PFS模块的文件扩展名白名单，使任何具有PFS访问权限的用户上传和执行任意PHP文件。
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 0 ~ 0.9.26 -

II. Public POCs for CVE-2026-58143

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III. Intelligence Information for CVE-2026-58143

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Vendor Advisories for CVE-2026-58143 (1)

Proof of Concept for CVE-2026-58143 (1)

IV. Related Vulnerabilities

Same product: Cotonti
Same vendor: Cotonti
Same weakness: CWE-352

V. Comments for CVE-2026-58143

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