CVE-2026-58143

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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://gist.github.com/sermikr0/75686815e441c07462cfdea2fed5d305
https://www.vulncheck.com/advisories/cotonti-siena-csrf-via-admin-php-config-update-endpoint

Configurations

No configuration.

History

09 Jul 2026, 22:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-09 22:17

Updated : 2026-07-14 22:17

NVD link : CVE-2026-58143

Mitre link : CVE-2026-58143

CVE.ORG link : CVE-2026-58143

JSON object : View

Products Affected

No product.

CWE

CWE-352

Cross-Site Request Forgery (CSRF)

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